I recently brought a Gulbranson Console back up to pitch and tune. I encountered a curious phenomenon that I'd like to delve into. When I brought the unisons into tune I would eliminate interference beats but would open up another quaver (the best I can describe it) that was consistent throughout the mid treble. I tried re-tuning several times and it opens up only when the unisons are well in tune and the intervals sound OK except for the quaver in the notes. The speed, fast, was fairly consistent from one note to the next. The customer stated that this was the best her piano had ever sounded, was ecstatic, so I didn't bring that up. I'd just like to be armed with some ideas for next time I encounter it as I hate it. The next piano that day was a Knabe 6' grand and quite a joy to bring 25cents plus up to pitch. It had four/five pins at the bottom of the bass driven so the coils were all the way to the plate. I CA glue treated them and some notchy pins at the high treble. I'm wondering if it is possible to ream the holes a little and shim with sand paper without breaking the coils. I'm thinking of loosening the tension on those strings and then driving the pin out from the bottom. Problem is, is it possible to drive it back in with shims? Or can those heavy bass strings be unwound from the pin and reinsterted without breakage? Be-quavered in New Mexico Andrew
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