The (original ?) Easylock handles broke. Rather than trying to replace the handles, I bought a dual Lewmar clutch off ebay. But I've read that on Hunters' (maybe all?) there could be a metal 'backing' plate that I'd have to drill through. Does anyone know if that is the case? Also, any tips on installing these? (I'd like to switch to the Lewmar if at all possible). Thanks!