the bolts that hold my upper a-arm on have streched/stripped and i need to replace them. is this a hugh job? i went to my local tire/suspension place and they wont do it cause of the bags, went to another place and they want $150 w/alignment. and they said it will happen again cause of the bags. when i did the bags i had to heat up these bolts to get the nuts off, could that have weakend the bolts?