Question: I am having trouble threading my wing bolts through the wing into the T-nuts installed in the fuselage. I think there might be some epoxy in the T-nut threads. What should I do?

Answer: Try to thread the wing bolts into the T-nuts without the wing.

If the wing bolts thread into the T-nuts OK without the wing them the T-nuts are fine and you probably are not seating the wing firmly against the former before trying to thread the bolts into the T-nuts.

If the wing bolts will NOT thread into the T-nuts without the wing, the T-nut threads are either plugged with something like epoxy or have been stripped out. They will need to be replaced.