[viper11]

ok the tests and results so far
the msd performs flawlessly when the white wire is grounded(or ungrounded) even when i flick it as fast as possible,it has a nice fat spark at the spare plug.
the coil is good,(verified with a second coil).
the injectors click in time with me spinning my spare distributor, by hand plugged in with the fuel pump fuse out,(indicating the ms is receiving the vr signal) but the spark is very random and weak.
the ign on the stimulator works and flashes perfectly in sync with the rpm,
dwell is set to 50% fixed,
both pots are fully anti-clockwise.and tried2 and 4 turns clockwise
tsel to vroutinv.
sheilded vr wires. all wiring checked and was working fine
all grounds to engine block including msd.
was running and suddenly started by losing 1 cylinder spark.
is there anything I am missing?? if my vb921 was faulty would the stim work??
jason