I recently bought a 98' F150 -- tailgate is really tough to open -- there's a poly bushing on the drivers side of the gate that seems to be the problem- i wanted to remove it and replace it if needed, but when I tried to remove the gate I can't get it to budge off the drivers side hinge pin. I had a 2000 F150 and a 96 Chevy 2500 and both gates would come off easy -- Is there a trick to removing the gate on a 98?