I lost the tail cone on my os 50 max (currently replaced with a Old Spice Deodorant spray can
). The muffler is a 744. Can you suggest a replacement muffler for the 744? The mounting holes are 34mm on center and the port is 8mm x 20mm. I also have a 61fsr that uses this muffler so I may have problems with it someday. Thanks in advance for your advice.