There was oil in it but that was last checked when it was fitted (about 10/15K miles ago or more now) Its only third gear it doesnt come out of, the others are fine (usable anyway!). It goes into each gear fine too, including third.
Also before it went wrong, i noticed third wasnt giving me that much power. I usually switch to it to over take cars but it felt very unresponsive and didnt have enough to get me past anything! Not long after, it started getting stuck. Im assuming the lack of power is related to the problem with my box