fontyyy wrote:Lot's of stock NSR bits left in there eh Roy? I see one hose that might be from a KV3 NSR.

It would probably be easier to have new straight cut primaries made than source that little lot!

Quite right John!
You got me thinking. It's cost me a lot of time, effort and a small fortune to get it to this spec'. Less, than a supposed mint '21 or '28 from some dealers though.
You're wrong about the hose though! I won't say what bike it came from as Andy might ban me!
I think there's only the headstock and swinging arm bearings, screen brace and clocks/dash bracket that are KV3 parts. The clock bracket is modified too! Oh the front brakes are KV3 also, at the moment!

Getting back on topic, I'm not sure I'd bother with straight cut primary gears for a road bike. Along with loosing the kick start, you also loose the gearbox oil pump. Something I personally don't prefer. Probably better to get some primary gears made to suit the standard set up.
Then again, as Matt says, it's worth it if you think it makes the bike better for you.
Just can't help modifying these bikes really.