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That would probably help but the intake is already isolated from the motor via the rubber intake boot. I think the original issue was really a material thickness problem.

but the motor is solidly mount to the frame which will still transfer the mechanical oscillations to the intake adapter since the intake is solidly mounted to the frame.

Time will tell.  My intake I got from 500 Fanatic several years ago also broke an arm that had to be welded back on.  We are going to look around for a few washers to help with any vibration.  We'll see.

Dave Kuskie should be contacting you for one ASAP!

Cool.