A quick update that might help others. So no one would check the wheel alignment the FWH seemed to be the deal breaker! So with thanks from the input of other forum members in this thread I finally got get out side to try the string method. Firstly use builders/bricklayers twine as it doesn't stretch, also the bright orange colour helped with visibility. Tied the ends on the rear springs and then forward to the front, attaching to a heavy axels stand. Then looked in horror at the 2/3cm Tow OUT on each side, this accounted for the bad handling. So loosen the clamps and rotate in, it takes surprisingly small amounts of turning to produce a big difference to the Tow In, so when making those adjustments be aware. Also you will have to check the line against the Front wheel on both sides and make small adjustments to allow for the changes. Basically I was pleased to get a 2mm accuracy in about 10mins after set up. It is so simple and so effective and probably give as good a result as the garage could get. Ok it's not laser technology, and there will slight bulges in the tyre that may off set things slightly, but if you are stuck like I was it is a pretty good fix. Total cost was £4 for the string.
The strange play at the end of the steering lock does however still remain a mystery. I have just rebuilt a steering box in anticipation of trouble (and Covid boredom) but so far so good.
Indecently the only top Colum bearing I could get came in a blue box and did NOT want to fit, some time with very fine emery paper to smooth the Colum down a fraction and placing the bearing in the freezer for 6 hours resulted in success with an easy assembly. Just as a cautionary note the box I rebuilt showed signs of these small ball bearings dropping out and getting caught into the top box bearings. I made a felt washer with a lot of grease to sit in the Colum which would at least catch them if they ever escaped (Blue box product say no more). Will update if I find the cause of the strange play.
Thanks aging for everyone's input on this thread there were was good suggestions and advice.