I got my little 1130 out yesterday and played around mowing the lawn for the first time with it. When I raise the belly mower it comes up then drops half way back down after the hydraulic lever is released. The tractor has dual remote hookups in the back where the lift cylinder is hooked to. The mower's lift cylinder is only using one hose to raise the mower deck. It is a dual acting cylinder but no hose is connected to the lowering side but I think I'm going to add one to keep from dead-heading that circuit when lowering the deck. Any ideas what would cause the deck to drop after I release the lever? Thanks in advance.