Olle:
A few more random thoughts (a mental dump)--how about a tiny steel shim in the center of the rod, in the clamping cap. This would allow the corners of the bend to rise up a bit, which might offset the rounding effect by providing some rebound capability. Relieving the groove ends in the clalmping cap (high spot in the middle) would probably serve the same purpose, but would permanently change the cap. FWIW.
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Neil  The hurrier I go the behinder I get. Sometimes it takes me all day to get nothing done.
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