My skin is getting irritated and I'm having trouble shaving the course hair off my chin. I am able to shave the sides of my face ok but the shave isn't as good as a DE shave yet. When I try to shave my chin it feels like the razor is scraping and pulling the hair off my face. I just don't think the razor is sharp enough. I do have sensitive skin and course hair, I have found that a sharp blade on a non-aggresive setting using a DE works best for my type of skin. I'm currently using a 5/8 Dovo Special Tortise str8, am I not stropping it enough? Do I need a full hollow ground singing blade razor (from what i have read they are the sharpest)? Or is that just how str8 razors shave? I am new and any advice would be greatly appreciated.

Sincerely,
Evan