I had a shop install my FRPP 3.73's quite a few months ago and now they are whining. i took my car back to the shop to have them looked at. the guy that installed them said that they are still perfectly alligned and he cant see anything wrong with them. there are no metal shavings in the oil or anything else like that to suggest that they are grinding. he says that on the box it states that there will be more gear noise for this instalation but i have driven it aprox. 10k miles since then instalation. i also have heard no other complaints from people on this board about there gears. can anyone help me? the noise is driving me crazy and im paranoid that something is wrong. Thanks in advance to anyone that can help me out.