What is with big bikes and gears?!?!?!

[Tony.OK]

Check the chain tension while your at it,too tight and it will cause harsh changes,and too loose it'll slap badly if you're not smooth with it.
My VTR used to have a crap gearbox,I started using SPECTRO GOLD oil and it was like a different gearbox.

You only change up without the clutch,preload the shift lever and as soon as ya let the throttle off it'll snick up a gear

[FJRider]

I didnt know a RF400 was a big bike

What he said.
Cable or hydraulic, there SHOULD be adjusters there...somewhere.
I wonder if you have ANY clutch plates left...intact.

[Skinny_Birdman]

I used to find the 'bird a bit clonky, especially when it was warm. I found that only using two fingers on the clutch (seems to make my action more smoove), and clutchless upshifts where possible (haven't figured out how to go 1st to 2nd without the clutch)made all the difference
A guy rides an RF600R past me (I'm walking)on the way to work every morning and it clonks and clatters its way thru the gears.

[niero]

Check the chain tension while your at it,too tight and it will cause harsh changes,and too loose it'll slap badly if you're not smooth with it.
My VTR used to have a crap gearbox,I started using SPECTRO GOLD oil and it was like a different gearbox.

You only change up without the clutch,preload the shift lever and as soon as ya let the throttle off it'll snick up a gear

OMG, it actually worked I replaced the back, front sprockets and the chain and had the gearbox taken apart and put back together again, it finaly makes smooth transitions, wow what a difference, thanks to all who have contributed the help is much appreciated.

Ride Safely everyone

Nikolai