i'm pretty sure i know the answer to this question but I just want a second (or third etc) opinion on this. it was real snowy today so on certain parts when i have to accelerate up a hill from a stop i put it in 4wd so my rear end doesnt break loose like it always does, even in rain. sometimes the 4wd lever (2000 taco, "J" type 4wd shifter) would just kick itself back into 2wd when i didnt hit it. is this a result of too much traction and forces and whatnot on the t-case or could this indicate a more serious problem?