We certainly never had any problems making these adaptors. I can attest
that they are good and balanced at least to 130 MPH....
In a message dated 22/12/2009 8:09:00 A.M. Pacific Standard Time,
Given the max. engine RPM, there are
very high demands on the concentricity of both 'matings'.
It's difficult to obtain a good result this way.
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