unable to remove my 60d deck

I'm trying to removed the auto connect mower deck from my 2020 1025r. I cannot release the left rocker lever (drivers side) to remove the deck. The right side is free and as expected. I'm on level ground, deck directly on ground, pto set to rear and followed the manual instructions, watched videos etc. This should be easy. What am I missing ? I'd appreciate the help

thank you
Garry