As per the others that remember his original posts & the quest to get him a welding mask - welcome back.
I'm glad you seem to be doing OK - wondered what happened to you - happy to see you now have gas gear for the car project as it seemed so hard to try & arc weld it - feels like a long project restoring that car - hope it goes faster now you can gas weld ( & I'd be willing to bet members here would be happy to sort out a cheap new or second hand Mig welder & ship to you if you'd accept it & can obtain argon )
With regard to the gas pressure I agree as others have said - it's way high - I only use just over what the nozzle needs so the torch valves are only trimming it slightly from full flow - you need a little bit in reserve or there is too much chance of backfire / flashback - I hope you have flashback arrestors fitted ? below is a link to a BOC page - it's got useful general information & starting on page 28 is a nozzle / pressure chart.
https://www.boconline.co.uk/internet.lg ... _39396.pdf
if a true Mig is out of the question & / or argon is not an option there is a very cheap stand alone spool torch on Ebay that connects to any arc welder as a power source & you can run that electrode negative & use flux core if that's available to you - would help with distortion - I welded many cars back in the day with gas but mostly sills / floor pans etc - not generally outer panels that needed to retain their shape - I'd never do it again if Mig was available !
Did you ever come up with a solution for the small tractor center pivot joint ?
Just watched the video & your English is very good - all the best for the future & hope to see your car finished soon.