hi there y'all.

I hope everyone is enjoying their vans this summer.  
I have developed a little problem now that the warmth is here.  I have an 85 GL.  It starts fine, runs great until up to temp.  Seems to develop a somewhat erratic idle and sometimes stalls when it comes to a stop.  A guy i know that use to build and race modifieds told me to check the timing becuase sometimes shops will adjust the timing to get an engine to run right.  what do you folks think.  Also  if this is the prob. I have not timed a waterboxer just air cooled busses, so if anyone has a pointer or two it would be greatly appreciated.
thanks
josh 85 GL "EVA"