Thanks for your input! I replaced seals in the two tilt cylinders 2 years ago as well as the lines going to the tilt lock valve. I just posted photos of the valve on my machine in the event you haven't seen them yet. Linkages are fine, and spools look like they're in normal position (no evident broken springs). I'll verify pressures before pulling the tilt lock valve to ensure that I'm not overlooking something. -Tom The two lines coming from the control vavle tilt spool are on the left, the tee'ed cylinder lines are on the right, and return is the center line. -T