Hi Amelians

Today during sailing I felt something was not ok on the Bamar furler so I decided to open and check the belt. As I opened it I saw that the belt is ok but it was not tight correctly. By trying to tight it I saw that it is not possible to tight it because the screwing is damaged (M6). Did it happen to someone? the hole is only around 7 mm deep. 
As a repair I could see two possibilies, either drill it new with M7 or to drill a deeper hole and drill the new hole but I am not sure if or how deep I could drill the hole without damaging the motor behind it.
Any advice would be more than aprichiated.

Thanks,
Lior, SHARONA, A54 #018