Kitchen Faucet
#1

I have a single "leaking" faucet arrangement with the handle seated on a round knob. The handle is remoable by loosening the set screw. However, I can not budge the circular ribbed ring that I assume must be loosened to disassemble the faucet for repair. I have used wd-40; I've used padded wrenches on the base and the ring. Any suggestions?