OK folks, I have just installed a brand spanken new fuser in our networked HP Color LaserJet 8500dn. Now I am constantly getting fuser jam errors, but only when you go to duplex (It has the duplexer installed). Printing only on one side works great. Every second page with duplexing jams. I have inspected the fuser and have made sure it was installed properly. I have inspected the duplex unit (which sits directly under the fuser) and it seems to be ok, no broken parts, it was seated properly. I have cleaned all the rollers, as well. Any suggestions?