Foam core stab/wing servo mount repair
 

I need some help!! I recently made what I thought was a fair trade for a 40% Carden Extra 260 only to find out that I got screwed. This airplane was supposed to be in flyable shape which i have come to find out that it actually needs quite a bit of work. the guy i got it from recovered it to hide all the problems that he didn't want to fix. All of the servo mounting rails that were mounted in the foam surfaces have been either damaged beyond repair or ripped out completely. My question is how do i go about repairing the holes where the servos were mounted in preparation for installing new mounting hardpoints? keep in mind that a lot of foam was removed from the wings and stabs. Ill try to post pics later. Also i will need to correct servo mounting locations for this aircraft. Anyone have any plans for this aircraft laying around?