So I've been shaving with a DE for a few weeks now (merkur 33c/ merkur super blades) and I've found that second pass ATG on my upper lip always feels like I'm digging under the hairs, lots of pull and razor burn, little bit of blood from time to time, which as you can image doesn't feel too good. Just wondering if someone can tell me what I'm doing wrong without actually watching me shave. Is it my angle, beard prep, am I not removing enough hair on my WTG pass, dull blade ( I only shave once or twice a week and have been using the same blade for about 3 weeks)? Any help would be greatly appreciated.
As a side note I'm getting the the end of the wilkinsons sword soap i bought a few months ago anyone wanna recommend a good decently priced soap to try preferably something I can get at a local drug store (in Canada).

Cheers
-Omid