I have an OX Max 90 that had a non-stock muffler on it. The muffler was held on by a hose clamp, and the other day, it came off and I couldn't find it. Since the muffler is no longer in stock, I have to either go 3rd party or find a used muffler. Can you tell me what the muffler number is for that engine so I can find a replacement? Thanks!