i've locked my dizzy but then i'm using a timing computer & crank trigger. timing is 18* on start up, 23* from 500 - 4000rpm(brake limiter set at 38)4000 - 7500rpm 36* & decreases every 100 rpm above that. easy starting with this program & full power dont come on till after the brake is released & going for converter stall of 5500 rpm, easy on the engine this way