Only runs 40 Degrees advanced

Did you set up the centrif. advance per the MSD instructions? Got the right springs in there for the right curve, and the right amount of total advance for the motor?
I put back in the weights and springs I was using before I put the sniper unit on. It was working with this combo before but even if it wasn’t right the car would still run. I did have this locked out to use with timing control on the sniper but I reverse that to test for this situation