the problem is i dont really want to go drive the thing, but as i was just sitting in my driveway slipping the clutch out in each gear, feeling for some drive, none of the gears made any noise, im sure if once i fulling disengaged the clutch the rattling would come, but just slipping the clutch and getting just enough drive to move the car a few cm's there is no noise in any gear.
i dont wanna spend a lot of $$ on the gearbox, but if it's just a bearing or something small, then im happy to pull the box out and fix it, as i said, 25 box is on the shopping list, but no point going 25 box unless the 20 box is gone, afaik there are no advantages of the 25 box over the 20 box besides strength, and if the 20 box hasnt given way, then there doesnt sound like any point in upgrading yet. are the gear ratios the same in the 25 box? quick search didnt come up with anything on that.