Woody mentioned that perhaps the bushing that the gear rides on, which mates to the kicker gear "clutch" gear, was too tight, and that wasn't letting the gear spring back. So that was the first thing I checked. I found just the opposite, the gear is quite "wobbly" on the shaft/bushing. Would that be my problem? Kicker skips and slips. Anyhow, spent a lot of time just pulling the cover off and on, trying different "things", spacing the gear on the cover differently, etc. Sometimes it seems to work okay...but sometimes still get a skip and a bang. Again, the gear on the main shaft is very wobbly.
Trouble #2: As I was kicking over of the engine, playing with the kicker, oil started puking profusely out the breather, below the cam cover. WTF? This engine is a rebuild by an unknown builder. Would an incorrectly timed breather gear cause that? Or would one assume the return pump is not working, and I've kicked it over enough to fill up the cases? Anyhow, decided to call it quits for the night, and see what you all might have to say about it.
Thanks in advance...I'm sure the collective brain-trust here should have some ideas.