Just finished rebuilding the crank ... new bushing, spring, ratchet & pin, as well as crank pulley and pin. The new shim was a bugger to get in, and I flared the end quite a bit. After getting rid of the big burr on the inside, I decided to put bronze washers on both sides of the shim, to keep a bit extra pressure on the return spring, and to keep the spring from wearing too much on the flared shim.
Nope, probably not kosher, but should last a while!
I don't understand where you installed a shim. Do you mean the bushing?
at both ends of the steel bushing, there's a brass shim/washer. ONe's just to the right of the return spring, the other between the engine side of the bushing and the ratchet. Jury's still out if it's going to work properly. I don't think the one by the spring should hurt anything ..but I wonder if the one next to the ratchet might keep the ratchet too close to the pulley. Probably not good to mess with mother nature .. :-)
If the ratchet is riding too close to the pulley and the pin in it, you will hear it.
It goes "cling, cling, cling" in a very disturbing way. You'll immediately wonder: What the H--- is that awful noise! Then go out and pull the ratchet away from the pully & pin & all will be ok again.
BTW, don't ask me how I know that...