Hi
I went through a similar thing a couple years ago. I started a thread about it, and how I "fixed" the problem...basically bending the mounting tangs a bit to make them easier to get on and off.
I'm not sure which type of retention your rings might use, but if it's the same, maybe my solution will help...
Good luck
https://forums.maxperformanceinc.com...d.php?t=830729
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Dave
http://www.squidsfabshop.com/?
(updated January, 2013, Pypes exhaust installation)