Re: ported Force 125
Good port work for a first try. Tops are all uniform and webs are decent.
I did have an ulterior motive in the PM asking you to post a couple of photos: I wanted to see if the ports were sloppy, not uniform and generally poor workmanship. Your port work should not cause any running problems.
With the intermittent miss and loss of power you described, I would first suspect the ignition system. The first thing to do is to check all grounds. Since the electronics plate is insulated from the engine by the rubber mountings the single ground running from the plate to the bypass cover bolt is important for proper operation. I personally don't trust such a small ground and the coils and CD boxes depending upon their mounting bolts to ground them to the plate. I prefer to run a "daisy chain" ground wire from each coil and CD box back to the ground terminal on the engine block terminal strip.
If grounds are proven good and you still have the problems, then it is time to check the stator and trigger wires for breaks that movement of the throttle could cause to lose continuity.
