OMG..that is the first time I have heard of the screws holding and the frig took the damage. I finally gave up on the NorCold frig (we had 4 of them replaced...yes 4!!). On our final visit to Alliance we paid to have the Norcord replace with a Furrion 12v frig and it has been a ROCK star!!!
For your problem, maybe some JB weld in the holes...allow to dry....and drill holes again (through JB weld)??