I am asking for advice on how to treat the pins that do not rotate freely in their seat, but rather creak!
I have tried heating the pin; I have tried to extract it, clean it, and put it back; I have tried tapping it a bit... but nothing changes. How is the problem resolved? By perhaps changing the pin?
The pins in question are about 20, and once replaced, there is the problem of string readjustment; how long does it take for the tuning to stabilize?
Should the pins be replaced with the same size?
Well, enough questions; I hope to receive information. Greetings to all Raffaello
Replacement of ankles [tuning pins]. after the extraction of the very light ankle, slight cleaning of the hole and a larger ankle. The strings are carried out with a procedure for octaves even 1/2 tone above. obviously the bass strings must also be changed, perfectly remade based on a sample.
it is a KAWAI KG-2 located in a living room; anyway, if it turns out to be string attacks, do I need to check the agraffe, compressor, etc.? and if that were the case, how do I resolve it?
Compressor? Does the kg2 have a compressor?? Maybe the hitch pins... Eh, if it were oxidized strings, the hitch pins and the strings themselves should be checked; then there would also be a remedy to test it, but I am ashamed to say it here as it is not canonical.
However, it can also happen that when the strings oxidize they play this trick on us, or as you say, it could be the agraffes or the bushings between the agraffe and the frame.
You could try to lightly lubricate the strings under the hitch pins with tallow to see if they slide better this way, so you can be sure it is the agraffes; however, it's not exactly an orthodox method but rather that of an old tuner, or alternatively, soap.
Otherwise, wait for Paolo, who is certainly more orthodox than me.... he will give you other advice and other ideas, I don't know.
Of course, if the kg is old and the hitch pins are scored, they should be rectified.