If the TORS is disconnected then check the TPS. Also check to make sure they didn't do any wiring themselves that may be causing problems. Check the main harness where it runs over the frame on the left side, sitting on bike, just behind the headlight. This is a known wear spot and wires get shorted to the frame. As for the carb/engine I would do the cam mod, 45 pilot, 165-175 main, 2.5 turns out on the air/fuel screw, NCVQ needle, 35-40 leak jet and adjust the ACC pump cam screw so it just touches the cam with the carb at WOT, must be off the engine to do this and remove the air box lid.