We bought our'97 Palomino Yearling last fall. Never got to use it before winter set in, but I did have it setup to check it out. Well today I got it out and set it up again. My question is concerning the lift post covers - the 3 sided, U-shaped tubes that fit over the lift posts when they are extended. I only found two in the camper - should I have four - one for each corner post? Or maybe just one on each side - diagonally? As in right/front - left/rear? Or should I be looking to buy two more so I have one on each corner? Thanks for letting me ask my silly newbie question.