I did replace them all with screw on springs. The problem is that the springs are too strong and will have to be weakened before putting the rail back in the piano. I used the drill press to drill the holes for the screws so I was able to get the holes drilled neatly. Make sure to drill the holes large enough so the screw will go it but not so large they will strip out. I would have preferred sheet metal screws instead of the little wood screws that came with the set. Don't worry about there not being bridle straps. The spoons hold the wippens up far enough so the jack down not fall down under the butts. Newton
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