I took the westy syncro out for a long weekend of camping and driving.  Boy do I love Westys! 
Only one problem occurred.  On the third day, when we started driving there was an immediate problem.  I could not cruise.  Acceleration was fine but when I tried to maintain a speed in a few seconds the engine would drop rpm like I had let the gas off.  If I pushed the pedal a bit more it would accelerate fine.  If I did nothing with the pedal it would start to buck until I did let of the gas or gave it more.   It did this even after it was warm but once I got out on the highway it was fine, but this may be because I was going up hill over a pass for the next 20 miles,  i.e always accelerating-or trying :- ).  After I got over the pass it was trouble free all the way home.  Seem like it could be a throttle sender or deceleration fuel shut off valve?
Thanks in advance
Nat sunny and hot Seattle
91 west syncro