A-Pac working but not so well in games

[toolaa]

I have been working through some issues with setting up a new A-Pac.  I still have problems with controls working in games.  (Mame32 0.94) For some reason the analog axises don't seem to be responding in games.  I have gone into the game specific control setup and the controls show that J1 X is assigned to a movement but there is a very sporadic response in the game.  For example in Champ Sprint, pressing the pedal repeatedly only gets the car moving in spurts.  It never responds like a pedal should.  The POT is good because I see the correct movement in the Cal screen. 

I tested Mame Analog XP with the exact same control settings in games and I did have proper pedal response to the J1 X axis but seemed to introduce more problems because my Rom's are 0.94 and AnalogXP is older. 

Any Ideas where to look for trouble?