Why would I want to put a carbon or titanium seatpin on my turbo bike? The mind boggles.
Anyway (as per the other thread), the seatpin is well and truly stuck in the frame. I drilled a hole through last night and put a screwdriver through, and put a scaffolding tube over the end of the screwdriver. I didn't quite plastically deform the screwdriver, but the seatpin is showing no signs of going anywhere - I'll douse it in WD40 but I'm not really sure how much more effort is worthwhile to try to save a 32 year old frame. The bottom bracket is on its way out, too. My wife reminded me that I did not comply with the one-in-one-out rule last September!
Reinstalled the old aluminium noodle frame onto the turbo last night, swapped the better saddle over from my dying Trek, and smashed out a workout this morning without a graunchy B/B. Saddle angle definitely needs a tweak, so I'm glad it was a short session!