Thanks for your reply swoop223

I was looking at that yesterday and noticed another thing. Sometimes
moving the three relays close to the flasher relay...would make the lift go all the way up. I tried moving wires around and nothing. Usually when the skyjack goes up the flasher flashes and it does not. I only see it flash when it's almost down. Not sure if this is related or not. There are three relays attached together by a long screw.
I tried tapping on one of the three relay...the lift would go up once in while. So I had a spare and replaced it thinking this was the issue but not.Same thing happens. Won't go up all the way. Is there a safety switch which prevents it from going up because something is not right?