The stumble came back
But, some more tuning/jet replacing got me part of the way there
Just not all of the way
New carb time
No pics, because it was a swine of a job and I already needed all 8 hands from the imaginary intelligent octopus that I desperately wanted to help me. I managed most of it by myself but,
sans octopus, settled for my mother sitting in the cabin holding the accelerator pedal where I needed it while I contorted myself 'twixt bonnet and wing blindly feeling out where the two screws that attach throttle linkage to carb go.
And when that didn't work, I stabbed the one in that I could get to and came back the next morning
armed with one of these. They're incredibly useful for holding onto a small screw while you turn it in a couple of threads to get something started. Warmed the car up, then went for an exploratory drive up and down the A38 (Clay Mills to Toyota Island and back). Sat at ~100km/h indicated, which kept pace with traffic in the left lane. Then on the way back I tried WOT.
Weeeeeeeeeeeeee!!!!!!!
Not 100% yet, probably because the plugs need cleaning up again/replacing entirely. But she's definitely got a lot of the pick-up back that she used to have.