All gas pipe's connected, I went to put some LPG in and made an arse of myself... It's been that long, I couldn't remember how to do it
I got 2p in.......
2nd attempt, success
I put about 4 quids worth in and heard hissing

It was coming from where the new pipe connected to the tank! I figured it did that each time I filled her before back in the day. So I went home, spun off the new pipe, put some of that red goo (as advised by the tanker driver who happened to be filling the tanks and all good). No more hissy fits
Anyhoo, I then came home and fitted the male/male (same method, red goo) and even though the cooling hoses aren't connected to heat the diffuser, I thought there was enough heat under the bonnet anyway so switched her over and "click" change in engine note, stall. Restart, "click" change in engine note, almost stall, rev, stall.... And repeat one more time, perfect. Assume air in the system caused weak mix.
Drove it a few miles and no issues except the teeny amount of LPG wasn't enough as the low gas warning came on. Which means, she warns you when there is aprox 5/6 litres left in the tank.
Tomorrow, I'll fill her up and see what happens. I'ma have to invest in a hoodjy wossname so I can plug in and reset the fuel trim now & then as well as kick it's ass just because.
But, today was brilliant so celebrating with a sniff of Jura
So, I don't pay road tax (or whatever it's calling itself this week) on George because of my injuries, now I can run her on gas, saving a few more quid, free dental treatment and no mortgage payments! I'm almost a refugee
