I used some red silicone from a tube for mine, is that bad?! did it over the winter. I also had to cut off some of my header pipe so the muffler would fit snug with the block on the header. That's where i used that silicone stuff. Still have to warm up the bike so the silicone sets into place

I had the same problems installing mine.   I bought reducers which ended up not working and then I fashioned one from a crimped can as your being told to,  but nothing would stop the leaks,  and my exhaust was still just pointing directly on the rear brake line.   I called around here in Houston and stumbled upon a guy who builds his own mufflers which it turns out are quite well known in the motorcycling world,  Jemco Exhaust,  and I got him to fabricate a coupler that he cut from 2 different diameters of pipe and he put an angle on it,  I'd say between 6-10 degrees,  and just welded them up.   Then the difficulty was getting the muffler on the bracket as they were not lined up correctly.   So I suggested he take his gas welder and heat up my bracket and bend it to match,  which he did and it matched perfectly.   To secure it in he actually made a bolt from some thick metal plate he had and cut it so it would just slide in but long enough that when putting the bolt in it wouldn't spin around.   Now my exhaust is air tight and bent out properly,  it looks and sounds great.   Cost me $40.  That was money is rather not have had to spend I originally wanted to just do it myself,  but in the end I'm glad I went this route for such a good job and a proper running muffler and engine.

I bought a 1.75" exhaust extension pipe at Autozone and used Dave's measurements to make a piece.  I cut about 2/3 through and cut out the wedge to make the bend and had my friend weld the cut. I expanded the header end to fit the header with a small pipe expander. It tended to "scallop" the opening so I would stagger the turns by moving the tool.  It also wanted to taper the expansion since the tool was longer than the depth I wanted so I cut a small ring of pipe that I put at the end of the expansion wedges to allow even pressure. Dyna fits over one end perfect. Expanded end over header fit to size. Used t-clamps. After bike was up to temp I tightened down clamp at header and all trace of scallop disappeared.  I borrowed the tool but Harbor Freight sells them for about $15.  No leaks and just enough length to use muffler mount with one bolt.  Just experiment with the piece before welding to check the angle of the muffler and that you can line up the mount. Its regular exhaust pipe so needs some choice of cover but job is pretty easy to do if access to welder.

[/quote]well it's specifically made to use as an exhaust gasket. does that make a difference?
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Hm. I've never heard of "exhaust silicone", but if it is good stuff it could solve some of the leak issues some folks have with the Dyna/Savage tube diameter issue.  A bead of that stuff around the "tin can gasket" and clamped in place might be a very cool thing. Let us know how it works out.

Will the Ryca adapter help seal better than not having an adapter at all? I'm at my wit's end chasing a leak!