I just ordered a full big gun system for my 93 600r and the header seemed to have went in fine but the muffler is pushed out to far to line up with the two bolt-up holes... It says right on the box it came in 85-87, 91-99 XR600's... is it common for a machine made product to not be perfect or like a stock exhaust? I am affriad I wil have to do some cutting. Also is the both ends of the piping from the header and the muffler (where they would connect) suppose to be the same diameter size? Becuase they are but i figure the connecting clap would just fix that... Any help would be great! I ordered the product from rocky mountain, spent alot of money and its frustrating I dont want to have to send anything back! Thanks guys!