I just purchased the Rupes LHR 75E Mini Random Orbital Polisher. I also purchased a number of Rupes pads used for polishing and compounding (4" pad made for 3" rupes backing plate). What pad can I purchase for applying a wax or sealant with. All rupes pads have some cut. Can I use a 4 inch Lake country ccs red smart pad even though the Rupes backing plate is 3 inches?