Twin TorqStorm 440 Build

RAMM said
9psi at the start, tapering rapidly off to 2psi. At the initial start of testing boost was on its way to 11psi at the hit and every test progressively getting worse. J.Rob

Was it tapering off due to belt fatigue or wear? Or do you think those superchargers just couldn’t keep up with the demand of that engine? Or both.