Personally I would be worried!!! Just understand I have no proof whats so ever to back up that fear.

I can tell you what I'd do since this is cheaper then a new plane

Go to the LHS and get some fiberglass cloth 1/2-1 oz and about 3-4 inches wide. also get some 30min epoxy and a couple cheap paint brushes. Now remove aileron servo and linkage from wing.
where wing halves meet measure back 1-1/2-2" on either side and remove covering. next apply light coat of epoxy to bare balsa take fiberglass cloth and wrap around wing start at underside trailing edge of wing make slits in fiberglass for torque rods to go through. apply light coat of epoxy between layers use 3-5 layers depending on weight of cloth purchased. Let dry completely sand and using dremal or xacto knife remove enough material around torque to allow ailerons to move without binding.

next use monokote trim coating to cover fiberglass joint (its adhesive backed so you won't have to iron it on)

reinstall aileron servo and linkage making sure with aileron servo in neutral position ailerons are even with trailing edge of wing.