Thanks everyone for looking & giving feedback and advice.
I wasn't sure about starting a build diary after reading others, mine will be pretty basic.
I'm not that good at writing a good story, people can make grass growing sound interesting, I can make a sunset sound bland.
Dr Goggles; I found padding to fit 1 1/4" last night after searching for a while, is the buzz only while your resting or as soon as it touches? (don't feel special about being up the top, you posted while is was writing my reply and I can't scroll down the bottom of my post to edit it on my phone)
Stainless; I hope to get the tub lined as soon as my driving gear turns & I finalize the seat angle.
Peter Jack; I want to get the diagonals right into the corners, think I'm going to do it the hard way (& normally a couple times)
Max; I've been keeping up to date on your engine work, it's great to know your coming back again this year, hope it goes well for you.
I have a firesuit on the way, still trying to source a helmet, I'm wanting a Snell SAH2010 one with forced air, probably a bit of overkill but I don't want to buy one and have a rule upgrade make it useless.
I "think" I can see, I live opposite a big wall of a shopping centre, when I put the table together I sighted along the table and there's a line on the wall at horizontal from the table, that's my test mark, if I can see that I think I'm ok, I have a front wheelwell mocked up out of MDF.
I'm using a 23" tyre, I couldn't find any 21", I've been told they've been dropped.
Visibility does worry me some, as you said I'm going to be looking through the screen at a shallow angle.
I haven't found a maker for my screen yet, I've been told there's a company that makes screens for kit planes and stuff about an hours drive away.
Must remember the duct tape and the sun thing, thanks for comment on aero, it's all just thoughts and BS until I give it a run.
I'd like to get some CFD yaw stability advise but it adds up quickly, probably not as quickly as redoing the whole thing though.
StWheeler; thanks for that, how is Sam's engine upgrade going? He was kind enough to answer some questions I had about steering lock angles a year or so ago.
Rex; thanks for that, think that's what I'll do (won't be as pretty though).
Recon I'll cut and tack all the diagonals in and when I start welding it up remove them in pairs, weld the main tubes and then tack the diagonal back in and weld the cutoff part of fishmouth back.
Glen; I'm going to fully sheet my tub and rollbar section, the back will be the firewall, is it still possible to cut the hoops off, not hoping to use your services but noone else does either.
Thanks
jon