ok well it is not all the A/C if it gets worse with A/C fine... but your A/C doesnt make your motor jump as if to leep from the engine bay... so i think your problem lies in something else... i would take a look at it for you... if you go to the meet on sunday (if you can drive it that far) bring it... if not i think Alan, KickUAround, lives by you and i am always over there i could stop and take a look at it... just let me know... but i dont think it has much to do with the A/C juat maybe the load the compressor put on the motor when it is on...
-Keith