I was in a local tobacconist yesterday and was happy to see a locked case with Col Conk, Merkur, various quality shave brushes and dovo straight razors. There was a black shavette with a red insert. Not knowing, I bought the shavette and some professional blades. Took it home, thought the blade fit the insert oddly but got it in, lathered up and got a BBS shave with a bit of burn on the neck and a few neck weepers. THEN, I looked up the razor and realized I had the insert for a regular DE broken in half! Went back and replaced it-it did fit better but still a bit of a challenge with the shallow indents and bumps. Will need to wait for a day off to try again. I've played with st8s and this is different being so much lighter and sharper (a comment more on my honing and stropping shortcomings!), but it gives a great shave! Just need to fine tune the pressure-it is so light you tend to press to hard. Another dynamic to this great hobby!