i used the telescopic lances which you pull out and then twist to lock in place and the twist parts were poprivited, then when locked my lads would forget which way to undo when trying to feed them back down.
The forgot which way to tighten and loosen then put grips on the twister and break from the potrivit.
So i use the push button type to go up and down & lock in place, do not have the same problems any more.