I've been training more consistently lately, and i've noticed a steady improvement in my game (with some hiccups here and there). Anyways, i've been having more success taking people's backs lately and getting the hooks in. From there I like to work a couple of collar choke variations. I've had the same problem with a few different people that i train with, where I noticed that as I try to slip my thumb into their lapel, they start grabbing a squeezing my fingers. Now, they're not trying to submit me by doing this, but are preventing me from being able to do much of anything. So far I haven't said anything, because all three of the times it was against high blue belts (i'm a white belt). As far as i know, you cannot grab fingers, so this pisses me off. At the same time, I don't want to be an asshole telling higher ranks to stop grabbing them. Anyone else have experience with this?