I know this guy again cant keep it clean

And again im a wanna be operator till i get me first 50 m

But when them heads show themselves id love to stop em and gentley chip em

This a transcerete i think i remember bvuddy sayin them plastic cups

Dont know if that means piston heads    BUT

Is there a way to stop pistons exactly where you want em

AND

If you got full failure whatever it maybe is there a way to manually shift tube side to be able to clean cylinder

I think there is a toggle switch on the side of the control box. I think there is one for Auto/Man and one for Left/Right or A/B Cylinder. I dont remeber if there is a manual lever, if there is it, it'll probally be a block with two rubber push buttons on it.

Put the pump into reverse mode, wind down the volume control knob on the panel 50% then turn the pump to the pump on position and at the same time hold the jog switch one side (any side will do) this will stop a piston at the hopper end of the concrete cylinder. Apply water and wash the end of the piston body ... it is steel.