So, having budged it only a few weeks ago, the damned thing is now stuck solid in my steel frame. Nothing seems to be shifting it. I’ve tried spraying the interface with GT85, chain lube and the like and leaving it for a bit. I’ve given the saddle a twist (not too hard).
I’ve also hammered upwards at the bottom of the locking collar using a bit of wooden curtain pole and a mallet to try to shock the sod free. I have also loosened off the qr collar entirely and ridden the bike around trying to exert pressure every which way with my backside.
All to no avail. The only bright side is that it still works and is at the right height, but obviously this is small consolation.
I know this thread has probably been done before, and in am due a flaming for allowing this to happen. However, if anyone has any helpful tips that would be great. The only other thing I can think of is heating the seat tube with a hair dryer, trying to free it, cooling, reheating etc.