The 3pt lift on my tl2700f doesn't function correctly. I am sure I am probably missing a couple springs. I can lift it with no problem, but sometimes when it has been in the up possition for a while it won't come down without shocking it. By shocking it I mean to pull up on the 3 pt lever and quickly push down on the lever...not a gentle drop. It also does not stay at the level that I set. I have to keep a hold of the lever when I am mowing and constantly make corrections. If I set a height and let go of the lever it will drop. I am aware that the lever on the dash is supposed to let you return to a pre set height after you lift the 3 pt...correct? There isn't a cable to the dash lever (I assume it is cable operated). Thanks,