Hi Lejeune, when do you strop? Is it before or after your shave? There was a discussion on the stropping forum that 'resting' the edge makes for a better shave, that is strop after your shave and not immediately before it to allow the blade to rest. I was speculating there that this might allow the edge to undergo 'age hardening' where metal can harden further after working (stropping). It's all theoretical, but could account for the benefits of a seven day rotation (or even 2!). Have you noticed any difference if you just stick to one razor for a few days rather than rotating?