I believe 1st and 2nd share a shaft, 3rd and 4th do and 5th its own shaft.
It only does it in 1st, no other gears when driving, however I haven't tried selecting any other gears with engine running but not moving any where so I will try that. Does it make any difference that when I'm moving the rotation of the wheels are similar of those with in the box hence no noise (if that makes sense)
I'm thinking you could be right cosmic (hoping) but that wouldn't explain the noise it made!
The clutch wasn't new but I bet it has less than a thousand miles on it and didn't remove it when I had the box off last time,
No I haven't just put it in 3rd, I was in 3rd towards the top of the Rev range when it did it.
There is now no noise at all when driving it!
Dropping the oil sounds a good idea, I'll see what I can see down the side of the clutch fork, strange how it doesn't do it if I wait a few seconds then put it into gear, like cosmic says sounds like something sticking....it also doesn't do it when the engine is off, it's fine...