ok driving home in cool tonitght, i was giving it a small spirited run..not a thrashing, and after coming out of a corner then going into second it is making a knocking noise, not like a crunch but a knock, it does go into second and u can drive in second but makes a bad knocking noise, have i blown the gear? although i guess if i did it wouldnt go in at all?? wot could it be??