Cromwell S800 Mk3 lathe

Decided to use the belt from Lathes.co.uk. Made a fixture to hold it in position and to clamp the join.

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Had some chrome work done. Also got the cross feed drive shaft taper pined in.
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Have been adjusting the motor mount for a good fit, which took a while. Sorted out the light and RPM display stand. Need to make a housing for the RPM display on the 3D printer.
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Made a pin and a retaining socket for the gearbox change arm. Not sure how close to the original design it is. Had to get a 3/8" BSF intermediate and bottom tap for the retainer from Tracy tools in the UK (they are great). Now I need to find or make a spring for it, needs to be 6mm or 7/64" diameter. Got the plate on too finally used those U screws. Really need to clean up the knurling on that knob and get it chromed.
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Working on the back gears. I need 2 more 30 tooth gears but nearly everything else is there. Blanks are made ready for gear cutting also a mandrel. Just need to make a brass guide for the broach to cut the key way.

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Cut the gears today. Just need to broach the key ways. Next up 40 tooth gear. The only problem is that I need a 45 or 9 hole indexing plate for the 90:1 rotary table to cut the 40 tooth gear. I am also wanting to cut a 76 tooth gear for another project so I need a 38 hole index as well. Fortunately I can use the indexing plates I have to make the new plate.

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Made a new index plate today 38 and 45 hole, there is room for more hole patterns but will leave that till I know what I need. It might need to be 77 or something odd like that. Now I can move on to the 40 tooth gear for the Cromwell.
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Made a 40 tooth gear. I think I have all the gears I need now.
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Am cutting metal on the lathe now and have been setting up the tail stock. However am having problems with the spindle jamming. To release I have to back off this locking threaded collar.

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OK so I am having trouble adjusting my spindle bearings and end play. How to do it? I am going to try and answer my own question. Hopefully those viewing this will chime in with their ideas as well.
Here is a cross section of the head, spindle nose to the right.
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