M1000 UCCNC V3.4 Auto Dust Boot Issue

Hello,
My dust boot rises everytime I do a tool change and drops right after. I does this when the switch is in 0, - or =. I have checked all cables. The piston is receiving air to go up but isnt staying up in settings - and =. In UCCNC V3 you had to change the spindle setting M8 14 and pin 1. (tried it, didnt work). There is no advice like this for 3.4. I would like the option for the dust boot to remain up. Thanks!