Re: Holy mother-of all!
The best result that I got was by stuffing the exhaust pipe cavity with stainless steel scouring pads (5 or 6) from the kitchen cleaning supply isle and then buying a small can of tomato paste that was the perfect size to fit over the pipe and be held on by a hose clamp . I experimented with the amount of holes that I drilled in the end (after making spaghetti sauce) . When I went too far and drilled too many holes I just bought an other tomato paste can and tried again . My neighbours actually thanked me . This system worked well for 4 years until I found the proper baffle at a swap meet .
For properly made custom baffles , I would defer to Norman . ...... D.J.
If you don't have dreams , your dreams can't come true .