Hello : brand new to forum. Possibly this question has been answered many times - I apoligize if that is the case. I have an Intex 16' round pool and want to add a larger pump and fittings. The area where the 1 1/4 inch fittings are currently has already been reinforced from the factory. While it seems pretty straight-forward to trim the holes larger for the 1 1/2 fittings - obviously scary. Does anyone have experience with this ? Any advice will be appreciated.