>>2019783Whew, got there in the end. After taking out of the placebo bath, I reefed on the cranks with a 1.5m breaker bar and one came loose under my weight. The second one broke my spanner (though it wasn't quite the right size) so I had to file the flats larger to use my largest adjustable wrench. Took a while, then it took me and another person holding it down to break it loose. Now I've got fresh 2nd hand pedals on there, good as new.
I think next week I'll tackle the forks.