Hey there, got a coticule from steve at the invisible edge, lapped it, honed on it and used the full length of the coti but got a hiccup when honing near the top end of the stone.

the stone has alot of lines on it but there's only one that I can feel when honing and to me it feels like the blade hits it... enough to affect the edge anyways. I've lapped it for two hours so far after the first lapping and it hasn't taken it away, so I was wondering if I could get some advice on if its supposed to have this crack in it or not.

here's some pics:




its the two vertical lines in the firt picture and it also goes down the side in the second picture, implying its all the way through, any ideas?

cheers Alex