BSA 3 wheeler rebuild carried over from introduction section

It looks good but it a bit of a handful to drive to say the least, keeping it in a straight line is like the old films on the TV where you see them fighting the steering wheel left and right. I am trying to find out the correct tracking but so far can't find any info, I know most modern front wheel drive cars toe out, anyway going to try 1/8 toe in, and see if that helps if not then I will try 1/8 toe out. It is difficult to get anywhere near as the leaf spring length changes as the suspension flexes. All good fun