Which gearbox?

[holty]

so what your saying is your gap between 2nd and 3rd gear is too big, gp 200 boxes are like that, its very noticable changing down as well, thats why a close ratio box will solve your problem. 3rd and 4th gear are just the same as you have now, the diffrence being that first gear is a lot higher, so you can go faster in first, you might have to use the clutch with a fraction more slip,then you can change up to second gear at a higher speed, and with more acceleration, so when you change to 3rd gear, theres not much drop in revs and you should carry on accelerating easily, theres not to much drop between first and second either, you may find that you can even run a bigger front sprocket, depending on how much torque your engine makes.