Bought 17" reverse cone mufflers to fit on a 71 CB350. Header OD is 1 1/2" muffler ID is 1 3/4. I used the reducers that came with the mufflers and they still feel very loose when clamped down. They can wiggle quite a bit and don't take much force to slide off. I stacked two of the reducers, which together measure just under 1 3/4". If I include the third reducer it's too big. I think it measures to 1 7/8. Frustrating. Any ideas for a solution? I also used the graphite exhaust gaskets from common motor but same problem, very loose even when clamped.
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