It has taken some time and a lot of patience but the Slippy Diff is now shimmed and the Axel is complete. The problems I faced when fitting the slippy diff were as follows.
* the Pinion was too long and clashed with the body of the diff unit.
* the diff carrier bearings need shimming to ensure the crown wheel and pinion mesh correctly, and I only had the two original shims.
The first was simple really I didn’t have any other choice but to machine the pinion down so that it cleared the diff housing. Unfortunately I didn’t take enough off the pinion and I really didn’t want to go through the hole process again so I machined the diff housing down by 1mm which gave me the clearance ( this can be seen in the photograph on the body of the diff) So to solve the shim problem I referred back to the workshop manual and calculating the shims is quite straight forward. Obviously with only the two original shims I dint have enough. I measured and calculated the shims that I needed and laser cut some new ones, I sent them off for surface grinding to achieve the correct sizes as we don’t have a grinding machine. Once the shims came back I found that the back lash was to big so I went O.T.T and made about 20 shims varying in 0.1mm. So as I said a lot of time and patience and the diff is in and the crown wheel and pinion are correctly meshed.
shims 
slippy diff with machined body 
cleaned and painted 5 speed box
a bit of DIY sand blasting
stage 1 of engine cleaning
collecting all the parts as I recondition them.
lightened fly wheel
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