Thanks Paul @ Michel.Wow lots of effort into that diagram...
Essentially yes sounds like what I did, nice and snug, just adjusted the spacers with washers or clearancing them as required, don’t forget they are hand made chassis and there will be variances between each of them.
A good pull on the ratchet will ensure it i’ll be snug fit.
Those nuts (lack of protrusion) will fail IVA as they are so you may need to swap the bolts for longer or use half nuts.
I haven't tightened the nuts up on the bolt yet, so I hope that the bolt is long enough to allow me to demonstrate at least the minimum protrusion.
Thank you for the support guys. I have a printed out copy of the IVA booklet (bible) and can see how easy it can be to inadvertently do something that could cause a problem. Much appreciated.