This 'new' plastic gear hasn't been out long enough for us to get any solid field reports on it use. Or at least I haven't seen any, and I've been looking for them! The dist gear issue has been around a LONG time and has MANY threads associated with failures. I absolutly believe the BEST information you can get on this subject comes from the engine builders themselves. Kieth Craft, Gessford, etc. THEY are the ones who deal with this in the 'real world'.
So how about it Kieth or George or other builders, you guys got any updates on the plastic gears yet? I was running a bronze gear, my new cam ate that one up pretty quick! Bought a new dist from Gessford who supplied it with the proper gear and it works great. Jamo used to carry a 'spare' bronze gear in his Cobra, rumor has it he could change it right on the side of the road and keep on truckin'.
That $hit got old, threw that solid roller away and went with a flat tappet from what I understand. Same for me, threw that stinkin' solid roller away and went flat tappet!