Heres the deal, I searched for this but found nothing..

Usually when I'm driving and I stop at a light or stop sign, I change the gear to first, like its suppost to be. but when I clutch in and try to put 1st gear in, it does not go in all the way, unless I put it in another gear and try putting it in first again. This does not occur all the time, its every once in a while, is this normal or is there something wrong with my transmission..

thanks