well my civic started acting up again. this time i think it has to do with the clutch but i dont know. when i was doing a couple pulls with my buddy everything was going fine then my gears started grinding while i was rolling. so i put in in neutral and it was still grinding. i pumped my clutch then it stopped. pulled over and looked under the hood and it was smoking from the rear main seal. there is a little tranny leak but its nothing major. also it started to bog out when i was driving casually. no cels, no more grinding but it sounds like im forcing the shifter into gear. any clue to what it may be?