I have posted here before and have rectified my personal (perfection in folding) problems with blades before. My question is how much perfection (tolerance) is acceptable in special order manufactured blades. I just (2 hours ago) received my Ritter Mk3 and it feels good. Looking at the blade, the grind on both edges snake along the entire legth (this is eyeballing only). Also, placing the blade against a tool level shows a slight recurve in the main blade (blade vertical and level on a tool level, show two shafts of light (1 large at the middle of the blade and 1 near the belly that is small. Is this normal? Can I fix it myself? I really like the feel of the handle and the weight for carry is great. I don't want to send it back because I like it, but the edge grinds bother me to the point I would like to fix them. Can anyone help with the sharpening angles required for this knife