I bought another Fatboy razor with a stuck adjuster. I tried to free it using WD-40, CLR, liquid wrench, boiling, etc... nothing worked. So I got a pair of pliers, wrapped a cloth around the dial, clamped down on the razor adjuster dial, held the handle with my hand and turned the dial with the pliers. It took a couple of tries, but eventually the dial became free. Lots of black, dried crud fell out of the bottom of the adjuster, but the razor is working now. So if all fails, get out the pliers. The cloth I used was to protect the finish of the razor so the plier's teeth wouldn't damage the razor.