action reg puzzler on M & H BB

[David Andersen]

On Sep 25, 2006, at 9:08 AM, Mark Potter wrote:

> I have tried numerous adjustments to the angle of the back check as  
> well as to the height of check for these 3 notes, to no avail.   
> Everything seems to be identical to the surrounding notes,  
> including jack reg - both in the window and to the knuckle core -,  
> rep spring strength, key dip, stroke, the arc of the tails, let- 
> off, drop, etc., etc... you name it.  Keys are rebushed and moving  
> freely.

I think the offending hammers are catching the edge of the front of  
the soundboard, or the face of the belly board.
Check it.....also check that the action is securely in place and  
doesn't move back slightly when it's screwed down.

David Andersen