i got a jlg 40ha, when i step on foot switch the drive motors are engaging and if i dont release switch it will kill engine cause brake is not released, if i rapidly step on switch numerous times it will operate as it should and it dont have this issue all the time its random im afraid im gonna get stuck up if i dont figure this out. it has deuts with standard bang bang hydraulic controls, only pq controller it has is on drive. i was leaning towards replacing the pq controller but if the controller was the issue i dint thing it would be random? any input would be greatly appreciated.