what ever you prefer, but don't count on it being desireable to anyone else the column shift "jamming" is very easy to fix, back yard engineering a floor shift, not quite so
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics