Posted for Scott Richardson <scott_m_richardson@sbcglobal.net>:

 Speaking of the WLS primer, I've got a couple places
 that have been primed but which I'd like to add a bit
 more filler to.  Are there any fillers that will stick
 to the WLS or do I need to take it down to the base
 glass and build it back up again?  Thanks.
 
 Scott
 

[As long as you properly prepared the surface before priming, I can't think of a reason why you couldn't scuff the surface of the primer, fill over it, do your sanding to contour, then reprime the newly filled area.  You probably stand the chance of doing more harm than good by trying to remove all the primer from an area without damaging the underlying skin.  If you mix your own filler using epoxy and micro and apply it to a properly prepared surface, you're going to get plenty of adhesion.  After you've finished priming that small area you'll probably need to go over the entire surface one last time with some Evercoat to take care of the inevitable pinholes and teeny minor depressions.

Sand and prime and sand and prime and sand and prime.... sooner or later you have to say enough is enough.  Otherwise it'll never be finished.  At least that's my take on things.....

 <Marv>              ]