i have a 2001 punto jtd, the clutch & gearbox blew up, iv put on a new flywheel/clutch and second hand gearbox, i cannot for the life of me get the gearbox back on! it goes about 2cm away from being fully on but just wont slide on the last bit, seems mad that i cant work it out, dowels are same/line up, clutch is lined up, but just cant get the bloody thing to go on, any ideas? really stressing me out now, im a mechanic and iv had 2 other mechanics look for me, it looks fine but wont go on