Hi RF Whatley. Thanks for your reply and apologies for the long wait. I had to put this issue on the back burner, but I have some time again to focus on this issue once more.
I have uploaded a video of the play in the rocker arm as a visual aid. Again, the play is only on the left hand side exhaust and inlet rocker arm. The right side is tight and has no movement.TR6C rocker arm play
We started the engine and let it run for a couple of minutes, but this did not change the discrepency in the difference in movement between the two arms on each side. What seems to be happening is that the thackeray washers are notdoing their job, but strange both exhaust and inlet arms on the left are the same.
The rocker arms and assembly were removed in order to have the boxes vapour blasted. They were reassembled in the the order they had been installed on the bike at the time of disassembly, which was working normally when inspected, but this order may have been wrong.
Anyway, I am planning on having another look on Friday so any help or advice would be really appreciated. Thanks!