Any suggestions?

Alloy post seized in a steel frame. It can’t have been stuck for long as I drop the post quite frequently, not being in possession of one of those new-fangled dropper things.

I’ve doused it with lube and given the seat a severe hoofing with a hammer, but its not shifting.

Your advice please oh wise ones

Post in a vice and turn the frame? or upside down stand on the saddle and turn the frame

Stu – I owe you a beer! Got it upside down and turned the frame , and it freed up with a bang!

Thanks very much!