ThrottleJockey
Shooter
WD-40 (Water Displacer, formulation # 40) won't lube, use white lithium grease. The WL grease comes in a spray can with a nozzle just like the WD does. The WL stuff will stay on, won't melt and run, etc...The easiest way to check door alignment after what you've already said is to examine the "reveal" or the gaps around the door when it is closed. Just look for uniformity all the way around....may need a $10 set of hinge pin bushings or may just need the striker adjusted.