[urq] suddenly lean revisited

[SpotatAshleys]

Evening all
A while ago I asked for help because my engine was suddenly going lean during up changes following hard accelleration but didn't go lean if I simply held it in gear and carried on at high revs. This suggested it was not a fuel pressure or supply problem but an enrichment fault or sticky meter flap. As before when this happened it went away before I could trace the problem. Several people suggested possible causes for which I am thankful. Then a few days ago it recurred and I had some time so I set about identifying the fault. I sprayed switch cleaner in to the WOT switch (leaving it in place), removed the bulkhead mounted vacuum diversion solenoid and blew in switch cleaner in to that and replaced some of the various vacuum/pressure pipes that go between the thermotime switch, the solenoid and the WUR. Some of these had become very soft and squidgy,possibly due to them coming in to contact with hydraulic fluid. I wondered if they were collapsing in on themselves during lift-off and then gradually un-sticking thus affecting enrichment. Anyway, the result is that now I have a very rich running car that is sweet as a nut, pulls like a train and gallops through the fuel. The suddenly lean problem is no more but it seems to now run richer than it should in all situations. I am going to wind the mixture back a tad on the fuel distributor and see if all is well then (i fear it may have been richened in the past to compensate for something I have now fixed (?) ,perhaps, may be....
Anyway, I thought I'd report back. If anyone thinks that the new symptoms suggest a different fault or perhaps something I need to check out please let me know. I don't want to start worrying about not having anything to worry about! 
Thanks for all the previous assistance with this. I hope I'm on the home run now with this.

All the best

Keith
'87 WR
'63 Daimler V8