I received a Magic Chef MCO 160 S over range microwave, second hand. I need to replace my GE which stopped working. However, the cabinet mounting bolts which go through the top were not provided. I went to the hardware store and bought new bolts, but the threads were not the same. The left bolt got stuck and when I tried to remove it, I broke the plastic piece which houses the "nut". So the nut is now loose. Two questions 1) how do I get mounting bolts that fit and 2) can someone suggest a repair for the plastic piece, I am not sure, but it looks like I would have to replace much of the oven, or should I just try some sort of adhesive (krazy glue).

Any help is appreciated.

Thanks,
Mike