My machine has 1100 hours on it. I picked up a sweepster brush off eBay. It came from a cnc machine company. The salesman knew nothing about it. The couplers were missing from hoses. Today I installed couplers on it without knowing which was input. I figured it's a 50/50 chance. I also replaced couplers on my machine today. I started up my machine and brush ran backwards, I tried to run forward through switch and nothing happened. I switched backwards to run In Reverse again, when I saw hydraulic fluid spewing from coupler, I shut down machine and disconnected couplers. I started machine to take outside as to not make a mess where my wife parks her car. The arms on machine will go up only, creeps up when hitting pedal down. Tilt will go forward and not backwards. Any ideas?