Found some info on threads here about injector bias and how bpw adjustments make it rich or lean at one end or the other.it would seem I've been adjusting the wrong things.did one burn with injector bias at .41 from .4 and that made a difference.no log yet but more reading to do.think I'm going to start again.gonna remove 4.5 injectors and clean them and try it.once weather permits.had an accident at work last week and dislocated my shoulder so I'm a little limited for mechanical work right now till this heals some.more time for reading