Originally Posted by DocBrown
Its normal. The jerkiness is caused by the cables on the crank. Over time they kind of wrap over themselves causing a jerkiness when they snap as they are being released. If you take apart the dinette or what ever is in front where the lift crank is you can watch this happening and then it all makes sense.
As far as lubrication I used to spray silicone on the lift poles when we had our '93 1208. But never lube the push rods or crank system.
It doesn't jerk, it stops. To get it to go up further, I have to make it go down a little, then back up and hope it gets passed where it stopped. I have to do this several times to get it up all the way. Normal, I hope not...