Hi Jon, Yes, there is certainly the potential to introduce some misalignment in the process of enlarging the original hole, and then drilling out the nylon (or whatever it is) insert. Extra care is indicated. I didn't find the changes too bad in the set I did last summer - I'm not sure it was any worse than the original. It is never quite perfect, hence the standard bending of pins a wee bit for spacing. Which is fine as long as it is truly a "wee" bit. WNG's problem is that there are any number of sizes of shank on front pins in existing pianos. It isn't cost effective to make pins all those sizes. I guess one could come up with a gradation of shim thicknesses, but that is probably easier to say than do ($$$). I think I remember correctly that I decided the drill size they recommended for drilling out the shim was considerably too small. I went up at least a few wire gauge sizes to get a size that would allow a tight press fit without making it nearly impossible to get the darned pin in. Regards, Fred Sturm University of New Mexico fssturm at unm.edu On Feb 7, 2010, at 8:59 AM, Jon Page wrote: > I ordered a set of f/r pins for a high use grand. They sent these > rather > large plastic tubes to retrofit the new pins. It seems to me that > having > to ream the frame hole .040" and then ream the tube hole .020" would > leave some room for slight misalignment. > > I'm surprised that shim is the best they can do as a supplier. It > seems > to me that something a simple .012" plastic sheeting would be an > adequate shim material, or even paper (since the glue would solidify > it). > > I searched the archives but nothing came up but this topic was > discussed > a while ago. > -- > > Regards, > > Jon Page
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