Originally Posted by Pre-Tuner
I don't know if there is an extra shim or not because I don't know what it is supposed to look like.
On OEM HEI's, there is the thrust washer w/tangs against the distributor. Then a shim. Then the gear. If the end play was set, usually there will be several shims or possibly a thick shim to replace the ~0.015" shim that the dist. comes with.
As long as the dist. isn't bottomed out
, there's a fairly wide leeway for where the mesh occurs on the gear itself, w/no adverse results. The pattern has to be all
on the gear, not running off the top or bottom.