I tune a 17-year-old Steinway O that was purchased new and has been in this climate since the purchase. I don't see any explanation to account for it, but the veneer on the case next to the left end of the fallboard has separated in a blister-like protrusion that gets rubbed when the quite noticeably when the fallboard is raised and lowered. There is also friction against it when the action is removed and replaced.
I would welcome any guidance for how this might be repaired.
Thank you.
------------------------------
David Bauguess RPT
Grand Junction CO
(970) 257-1750
------------------------------