Ok so the surgeon said he would pretty much make a plate about the size of the one in my right side. Minus the bushing and wires in my right labrum. My wifes says when I die she is going to cremate my arse and turn the rest in for short iron.
Anyway lets get back to the important stuff like the idle surge. I learned some more from working on
@Boog , bike last week.
His surge got to where it was a pretty good jerk enough to strian Hazel's neck. Anyway inside the yellow box the yellow arrow is pointing to a area that jas a spring in it. And the little area the spring allows the throttle shaft to move back and forth without the throttle cables and grip rotating. This is the idle area.
The arm that moves back and forth in the spring area. Has the roller on it the stepper motor pushes the idle cam against. Now Boog lives near the coast so there is a lot more stuff in the air like salt humidity and fine trash like sand. So his spring loaded area had no spring motion. If you held the motor you could move the throttle arm rotating the spring load setion and it was so corroded it would not return imagine the stepper motor and the ecu trying to adapt to a sticky throttle. If it didn't return to closed position the next time you turn the key on and it runs its home subroutine it would drastically change. I suspect if you take the stepper motor apart there is probably stripped gear teeth on the rack. It took me quite a while and a buch of WD40 to get the spring return working again. So I imagine if its sticky and sometimes gets locked where it is the throttle could get jumpy or as some say surging. It was a learning experience for sure.
This may sound a little weird but its the Narcotics the surgeon gave me