are these the right belts? it sems as though teh belt running to the alternator is too large and teh other belt is too small, as far as how wide the belt is not in length. is it ok if the alternator belt is a little too big to fully fit down into the wheel on the alternator, seems like it may be pushed in and just fit very tight if there were enough tension. also, how do you tighten the alternator belt? the one on the right is done by moving teh air pump, so im hoping there is a similar way to tighten the one on the left(alternator)