This is getting slightly frustrating. In certain areas I slide the razor over the skin at a 30 degree angle and the hair just doesn't come off. I pulled out my fusion razor for comparison and that one took it right off. My disposable straight blades passed the hair test. They seem pretty sharp, but in the dense growth areas I just can't get the hair off and it looks like I didn't even shave. Should I try a different soap? Just get a regular straight blade?