I started training about 2 weeks ago and am loving it so far. Sore as hell, but its the most fun I've had working out ever. my last 3 classes started involving mount, guard, side mount and submission techniques, my first 3 were all stand up techniques and learning proper form to roll. Anyways, here is my issue. In these last 3 classes, I've been doing the techniques with 3 different partners, and I'm not a small guy, about 6'2" 270. so I've been pretty polite in terms of how much force i use when I'm mounting, or trying to pass guard to not injure anyone. 1 of my partners was fine with it, because he said his back has been injured, but the other 2 kept on getting mad for being too polite, and told me to make them as uncomfortable as possible. but i dont wanna be the douche in class that injures people while practicing, nor do i wanna gas out before i can really learn. Is there a general guideline as when to be polite with technique, and when to use more effort? Going slow is good, simply because I pay attention to all the nuances in the technique, and i notice it when i am rolling with the 2 other dudes, but in a tourney or any situation, going slow wont really work too well. any info is appreciated.