Re: Tongue and Groove to tight on new flooring
the guy who milled it should be dealing with it and eating the cost to properly mill it. this issue is something that happens quite a bit with cheap hardwood flooring that comes from overseas as they dont have very good quality control. the only other time ive heard of installers having issues with hardwood not going together easily is in the middle of the summer when the humidity is ungodly which causes the wood to swell.
you can try to run a dehumidifier but where the moisture content is already fairly low unless it went up in transport or your house is humid .. it mainly sounds like a milling problem though
fire up the saw and make some dust