Anyone having problems with there entry door locks being hard to lock and unlock with the keys ?? I have used WD40 and silicone spray the lock is still hard to use. This is the 2nd one, the 1st one got us locked out of our rig and had to call a locksmith to get us in. This one is on the verge of doing the same thing. This is a 2010 Big Horn, I think the supplier has cheapened up the material used to manufacture them. Also I can see daylight through the lock when inside of the rig.