[jrwilson]

So, a followup from my visit to the mechanic.

It turns out a previous mechanic had left an allen key in the enrichment adjustment hole on the top of the fuel distributor, and it had migrated down and jammed itself in against the metering flap, literally preventing it from moving properly. Once it was removed the car was totally fine and it's back to pulling hard to 6500.

Wish I had checked that myself!