Smoking sounds like a fuel problem to me (unless it is blue smoke).  It
sounds like the timing on the injection pump is off.  Did you use that
special tool to time it with or just left it where it was?  I have taken
these heads off before and sent them to the machine shop with the injectors
still installed, got them back and put them on the engine with no ill effects
(don't seem to be prone to getting dirt up in there).  I believe the size of
the socket needed to get the injectors off is 27mm (Jetta Bentley).  When you
changed the head gasket did you replace it with a new gasket with the same
amount of notches as the old one?  This is critical.

Thanks,
Ken Wilford
Van-Again
John 3:16
http://www.vanagain.com
Office: (856)-765-1583
Fax: (856)-327-2242