Clutch lever setting

[RoyC]

I managed to straighten my existing bent arm with a ring spanner.

The SRM 4 spring is a very light action compared to the 6 spring, especially if it wasn't adjusted correctly, so I would think your arm would be ok now. When it's all up together you can access it and if not 100% happy you can always revert to plan B.

Your right Roger, it's a lovely action compared to the 6 spring.

Any thoughts about the chain being tighter in one place to another ?

Roy.

[RogerSB]

Another thing Roy, but I expect you already know this, is to adjust the primary chain for 1/2" free play in the centre at the tightest part of the chain.
Rear chain is 1 1/4" in centre at tightest spot.

[RogerSB]

Any thoughts about the chain being tighter in one place to another ?

Crossed in the post Roy, see reply 29.

[RoyC]

Can a stretched primary chain cause it to be tighter in one place  than in another ?

Even a new chain will have tight spots but on a worn one they will be more noticeable. To test if wear is acceptable lay the chain out in a straight line and squeeze the links together to take up all the slack for 12", count the links in that 12" and measure it. Pull all 12" of those links apart and measure again. The difference is the amount of wear. If it is more than 1/4" then the chain should be replaced.

Thanks Roger. Not knowing how long the chain has been on I'll replace it. I'm replacing the rear one anyway.

[RoyC]

New primary chain arrived.
I laid it down by the side of my existing chain and the old chain was 3/4 of a link longer over 70 Links.
No wonder that my old chain went from dead tight to 1" of play when rotating the engine.
I fitted the new chain and there is ½" of play all round the engine cycle. 
My worst fear was that I had a bent shaft, Pheew.

Thanks to all for helping to sort this out.
Roy.