---------- I have analyzed the motion of a Model B plate in this area with the coupling bolt both in place and with it removed. Both power and sustain measurably drop off when the bolt is removed. Tests with an accelerometer mounted on the plate surface between the bolt hole and the hitch pins in this area revealed that quite a lot of energy was lost to the plate with the bolt removed. Replacing the coupling bolt reduced the amplitude of vibrations in the plate and brought back the power and sustain back up to their normal levels. What is an accelerometer? Will it help me in my sex life, or is it good only for the shop? SICR : )) Wondering Richard
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