I recently installed the competition injection pump from THD and its incredible. Only problem is when I up shift the rpms hang and then drop. But the last time I drove it the rpms hung and stayed there. Fearing a run away I shut the engine off. The only thing that I can see changed on the engine is the 4th injector has bubble coming out of the base of the injector. I was going to turn the fuel screw out but I was wondering if there is anything I need to check out. The throttle linkage returns perfectly so that isn't hanging up