The pick guard(plastic) is badly curling on my '71 D-35. I had it flattened about 15yrs ago when I had the bridge reset, but it has only gotten worse. I've never seen another guitar do this, of any quality. Is there a way I can deal with this w/o damage to the instrument, or do I have to live with it or spend some of what little cash I have on repair? thanks in advance. Mike