site to site VPN issues with vlans...

okay, so we are having trouble routing traffic between two of our vlans across our site vpn.

overview:

both sites have a cisco asa 5505,
both sites have an hp switch 2910 / 2920 poe with vlan1 for data and a vlan20 for voice,

we are able to route across each vlan locally and across the vpn, apart from vlans 20 to 20.

The switch configs are virtually the same working as a L3 switch, and sending all traffic to the firewall.

Our managed firewall company are saying they can ping each vlan20 from the firewall and pointing the finger at the switches.  im not so sure..

here is the 2 site switch configs:

Running configuration:

; J9148A Configuration Editor; Created on release #W.15.08.0012
; Ver #02:11.05:16
hostname "HP-E2910al-48G-PoE"
module 1 type j9148a
mirror-port 5
power-over-ethernet pre-std-detect
qos type-of-service diff-services
timesync sntp
sntp unicast
sntp server priority 1 87.124.126.49
sntp server priority 2 178.79.165.21
time timezone 60
ip authorized-managers 172.19.0.0 255.255.0.0 access manager
ip authorized-managers 172.16.0.0 255.255.0.0 access manager
ip authorized-managers 10.255.255.0 255.255.255.128 access manager
ip authorized-managers 192.168.2.0 255.255.255.0 access manager
ip authorized-managers 192.168.3.0 255.255.255.0 access manager
ip authorized-managers 10.255.254.0 255.255.255.128 access manager
ip authorized-managers 192.168.100.0 255.255.255.0 access manager
ip authorized-managers 192.168.200.0 255.255.255.0 access manager
ip default-gateway 172.19.10.15
no ip icmp redirects
ip route 0.0.0.0 0.0.0.0 172.19.10.15
ip routing
interface 1
   name "to HP1910 (top)"
   no power-over-ethernet
   exit
interface 2
   name "tp HP1910 (bottom)"
   no power-over-ethernet
   exit
interface 3
   name "to ASA 5505 fe01"
   no power-over-ethernet
   exit
interface 4
   name "Cisco_AP_172.19.3.20"
   exit
interface 5
   no power-over-ethernet
   exit
interface 6
   no power-over-ethernet
   exit
interface 7
   name "Shoretel E1k"
   speed-duplex 100-full
   exit
interface 8
   name "Shoretel SG90"
   speed-duplex 100-full
   exit
interface 9
   name "Shoretel SG90Bri"
   speed-duplex 100-full
   exit
interface 10
   name "chi-Oaisys"
   exit
interface 11
   name "Shoretel HQ"
   exit
interface 12
   name "Ingate"
   exit
interface 19
   name "Test Phone"
   exit
interface 21
   name ""
   exit
interface 25
   name ""
   exit
interface 31
   name ""
   exit
snmp-server community "public" unrestricted
snmp-server contact "IT"
vlan 1
   name "DEFAULT_VLAN"
   no untagged 7-48
   untagged 1-6
   ip address 172.19.4.5 255.255.0.0
   exit
vlan 20
   name "Voice"
   untagged 7-12
   tagged 13-48
   ip address 172.16.4.5 255.255.0.0
   ip helper-address 172.19.10.17
   ip helper-address 172.19.10.18
   qos dscp 101110
   voice
   exit
no autorun
password manager

----------------------------------

Running configuration:

; J9727A Configuration Editor; Created on release #WB.15.12.0015
; Ver #05:18.41.ff.35.0d:9b

hostname "HP-2920-24G-PoEP-Bristol"
module 1 type j9727a
qos type-of-service diff-services
timesync sntp
sntp unicast
sntp server priority 1 85.119.80.233
sntp server priority 2 87.124.126.49
ip authorized-managers 172.19.0.0 255.255.0.0 access manager
ip authorized-managers 192.168.2.0 255.255.255.0 access manager
ip authorized-managers 172.16.0.0 255.255.0.0 access manager
ip authorized-managers 10.255.255.0 255.255.255.128 access manager
ip authorized-managers 192.168.3.0 255.255.255.0 access manager
ip authorized-managers 10.255.254.0 255.255.255.128 access manager
ip authorized-managers 192.168.100.0 255.255.255.0 access manager
ip authorized-managers 192.168.200.0 255.255.255.0 access manager
ip default-gateway 192.168.2.1
no ip icmp redirects
ip route 0.0.0.0 0.0.0.0 192.168.2.1
ip routing
interface 1
   name "to ASA 5505 fe01"
   exit
interface 3
   name "Phoenix LAN"
   exit
interface 24
   name "Shoretel Phone"
   exit
snmp-server community "public" unrestricted
snmp-server contact "IT"
oobm
   ip address dhcp-bootp
   exit
vlan 1
   name "DEFAULT_VLAN"
   no untagged 21-24
   untagged 1-20,A1-A2,B1-B2
   ip address 192.168.2.4 255.255.255.0
   exit
vlan 20
   name "Voice"
   untagged 21-24
   ip address 192.168.200.4 255.255.255.0
   ip helper-address 192.168.2.17
   ip helper-address 192.168.2.22
   qos dscp 101110
   voice
   exit
no tftp server
no autorun
no dhcp config-file-update
no dhcp image-file-update
password manager


ideas why this is failing?

thanks