Hey everyone im a first time floor installer. Im pretty handy i work hvac with a welding background so i can work around the fabricating and door jams i am sure. my problem is when i ripped up the carpet there was the very bottom of a old lolly column. its been cut fairly close to the floor and just hammered over the sharp edge. i have a hard-wheel grinder i can get the metal down real flush but the concrete around it is slighty raised im not sure i would even call it a 1/4 inch over the 8' effected diameter. the rest of the floor looks fairly well. i bought the lifeproof boards because i heard they were one of the nicer brands. so do i get that metal down with my grinder and see if the floor is not affected to bad when i get to that certain area or try to chip away at it a little? I was thinking home depot probably has some kind of mix bag you can get and self level it out but i could see myself making it worse iv never been quiet the rock mudder. thanks for the responses in advance