I had a suspicion that was the case as it didn’t even have a lock out lever. I’d like to know how it would feel with a moco damper inside? The initial stroke of the coil was fine just the mid stoke which just seemed to move a bit too much.
I put an RL Moco DNA damper into it, and to me, the difference is night and day – I’ll caveat that by saying it was a fix I was doing for a friend and he hasn’t ridden the fork yet, so it’s based on me larking about on his bike around the house. I’ll post up once he’s ridden it, but same as you, diving was his problem, and no amount of preload was helping.
Very easy mod too – 5mls extra oil (for 140/150 forks), just unscrew the cap, squirt in the oil, screw in the RL damper, screw on the adjuster, done.