I didn't have the Dist. O ring and was washing the engine a blasted soap in the dist. It didn't kill it. But for a year it always idles rough. I took distrib apart and found crusty dry soap blocking up many of the little slots in the disc. Get the O ring ad don't get all stupid like me and blast soap everywhere.

dave h.
'89 Raider V6 5spd;Aisin Hubs;; Gen2 LS: frt. brakes, rear coils;U.C.arms;R.trailing arms;idler arm; rear LSD axle w.disc brakes ;2 battery system for Dog's fan; relocated ECU; custom bumpers;J.Baker receiver;Conferr roofrack; t-bar crank.