Soil conditioner issue

[halbright]

Hello, I hope this is being posted in the correct spot. I’ve had a 7 foot soil conditioner on my T-650 for 5 years now. All of a sudden, when I’m angling it to the right, it stops angling after the straight point. I have to lift all the way up, tilt the head so the wheels touch the ground and hold left angle down while I put a little pressure on the wheels and it recovers and angles left properly. Almost like it’s stuck at a certain point and then needs help getting out of the predicament. I can duplicate the problem over and over and rectify it each time using the same method. I cleaned the valve body the best I can and bought a new solenoid and swapped it with an original, one at a time. Still can’t figure it out.