Can warped cabinet door be straightened?
We are restoring our 1927 gumwood kitchen cabinets. There are four uppers with 48 inch high doors that have the gumwood frames around leaded glass. One of the four door frames is warped at the top -- not too badly (the glass is still held in nice and tight) but definitely noticeable. I understand this is not uncommon with long doors. The frames are one inch thick.
Is there a way to safely straighten the door frame? Or at least improve it somewhat? We did try clamping it but it seems to return to its warped shape when released.