it was me that put them on, when i was a puny 15 year old. i was surprised that my 15 year old legs couldnt undo my puny 15 year old arm-doings.
left hand crank came off fine
the old STX's that needed a pace spider adapter to take regular rings. i was gutted when they got knackered - even if it was my own fault
anyone who has a set, my pm button is down there...