Spent some time troubleshooting the hydraulics. Pump would deadhead at 200psi. Valve block would deadhead at 75 psi. One of the unused spools wasn't zeroed. Fixed that and get 100 psi at the cylinder port. Not much change in terms of lift force. I did disassemble this valve block to mill one face for fitment. Maybe I put it together wrong. Dug out my old leimbach 2 spool valve. Same results. Lastly connected a new lesu 4 spool. That reads 125 psi at the port. I do expect some pressure drop in the valve, but not that much. Machine ran well before being boxed up with same hardware except for motor. Cylinders don't leak down. Pulled up old images to confirm I was using small 2mm line to each cylinder with good performance. No foaming of the oil in the tank. Clear lines show no air in the system.
I'm still suspicious of the pump. PRV spring measures at 5.5mm free length. Replacements state 10mm, but the design might be different. They also updated the gears to steel from brass. Mine are dark on the backside of each tooth, but no other damage. Don't have a an alternate pump to test with right now, but is on order. Fumotec valves will kind of fit with some work.
Plenty to do on the body, drive and steering in the meantime.
Made tail light mounts
Seat is a high back out of a semi truck for mockup. Looks really good with the boom down.