IPhone Activesync, Outlook OWA from SBS 2008 Exchange 2007 -> Server 2008 R2 Exchange 2010

Is anyone free tonight to fix this? We have migrated as per this doc

http://gimeti.com/2011/03/07/windows-small-business-server-sbs-2008-transition-migration-to-server-standard-2008-r2/

The last part we have done is part 13 so we still have a SBS 2008 and a Server 2008 R2 Server on our domain

Outlook OWA and Iphone activesync both worked on the one sbs 2008 server happily

We cant seem to get it to work now, although the IPhone I used connected wirelessly and sync mail this afternoon, yet then stopped when used over 3g

I have since tried this

http://blogs.technet.com/b/exchange/archive/2008/02/01/3404755.aspx

which seems to have broken it fully !!

have remote access available to both servers

does anyone have a spare hour to do this for me?

Many Thanks

Brian