> >Yeah, Ron. If anything, the turnbuckle arrangement spreads the rim further >outward. At least, that's what I did with it. Just hand-tight, though. >Magic. The whole dern thing, y'know. The "system"..... it's a...... mystery! > >Guy Hi Guy, I could be that it has more to do with stiffening the belly rail in this critical area. Remember that the rail is often a lot thinner up in this register, and the rail to board glue joint, or contact surface is quite skinny. Just another parameter to add to the mix. Regards Roger
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