I have a Husky air compressor, made by Campbell Hausfeld, I think. When turned on it builds pressure correctly until reaching about 60 PSI, then it slows down considerably until it reaches about 90 PSI, then it slowly speeds back up to normal, where it shuts off at 135 PSI. On top of the electric motor, there are 2 capacitors under small covers, one slightly smaller than the other. i think these are start and run capacitors. To my way of thinking (guessing) the run capacitor is most likely bad. What do you think?