I haven't tried bleeding the L10 or the Bucher LVRVF 350, only the cylinder air bleed screws so I'll definitely give that a go.
The hose jolts a bit but doesn't move too much as it's pretty heavy. The carrier in the pit is also stable and not an issue.
The more I think about it if trying another bleed doesn't fix it, it must be the cylinder seals bypassing oil and may be in need of new ones again.
The delcon hall sensor is reading 0.02v so that is ok too.
I have attached a video of what the lift was doing prior to moving the levelling switches out but it sinks down this far when 5 or 6 people get it and then when they get out on a lower floor it lifts up and starts levelling down.
https://1drv.ms/v/s!Auww3LXVzmjw9hM5pdFFiqM_GDc_