having trouble with my join statement

I'm working on a query that'll pull certain users, depending on certain criteria (such as what group, zone, etc they belong to). An user belongs to an ACCOUNT, which in turn belongs to other types of privileges. When I run the following query, I get the results I expect:

select acc.*   
FROM Accounts acc
	INNER JOIN PrivDefs pd ON acc.Privs = pd.Priv 
	LEFT OUTER JOIN Sites s ON acc.DefaultSiteID = s.SiteID AND acc.AdminID = s.AdminID
	LEFT OUTER JOIN Groups g ON acc.DefaultGroupID = g.GroupID and acc.AdminID = g.AdminID
	LEFT OUTER JOIN AccountTemplateAddenda t ON acc.AccountID = t.AccountID
	INNER JOIN siteAccess sa ON acc.AccountID = sa.AccountID
where acc.adminID = 188 and
	  sa.SiteID = 826906
order by AccountID

Select all Open in new window

however, I want to grab some columns out of the USERS table. I have a cross reference table called UserAccountIDs that has an accountID and userID columns. So I figured a simple join on those two tables would get me what I want:

select acc.*,   u.userID, u.MostRecentVisitDate
FROM Accounts acc
	INNER JOIN PrivDefs pd ON acc.Privs = pd.Priv 
	LEFT OUTER JOIN Sites s ON acc.DefaultSiteID = s.SiteID AND acc.AdminID = s.AdminID
	LEFT OUTER JOIN Groups g ON acc.DefaultGroupID = g.GroupID and acc.AdminID = g.AdminID
	LEFT OUTER JOIN AccountTemplateAddenda t ON acc.AccountID = t.AccountID
	INNER JOIN siteAccess sa ON acc.AccountID = sa.AccountID
	inner join UserAccountIDs ua on sa.accountID = ua.accountID 
	inner join Users u on u.userID = ua.userID
where acc.adminID = 188 and
	  sa.SiteID = 826906
order by AccountID

Select all Open in new window

however, I am only getting back about half of the records, with a lot of duplicates. This seems like it should be pretty straight-forward, but I can't seem to get the results I want.