OK, so I have the Zenoah G45 and am replacing the stock muffler with a B&B muffler. The original muffler bolts have a square head and are way too long for the B&B. I would just cut the square bolts down to size, but they are not threaded the full length of the bolt. Does anyone have a remedy to this problem or know where I can get the correct length square bolt?

-Zip