That’s part of the reason for the post. Our mechanic (A&P) has no experience with this type of construction and wanted me to find out what the known issues were, how to check for them, and ultimately how they need to be remedied. The glider has been stored indoors in his hanger the whole time, and about 15 yrs ago he did the annual inspection on it and it hasn’t been flown or out of his shop since. To my inexperienced cursory inspection, it looks OK, without any glaring obvious problems.