I have a 95 cobra 327 stroker, vortex v-2, with pms sysytem. took it to a shop for atune up and thought all would be well. If I smash it in first gearfrom a stand still the engine hesitates real bad, almost wanting to cut out,then after a few seconds, it feels like everything comes together, and away I go. has anybody had that problem before and knows what it could be? thanks