yes, the shutoff valve is between the pump and barrel valve. The high speed set @ 70psi is what Tim Engler told me to set it at, I gave him all my pump flow numbers and he set me up where I should be at on the main and HS.

i'll be firing it up this evening to double check the timing. I set it when I first fired the motor, before I ever took it to the track and haven't checked it since.

Are you saying if the timing light isn't super bright, then the magneto could be getting weak or weak magnets in the timing light?