First off, thank you all for the input on this little dilemma of mine! It appears that a combination of every comment on here fixed the issue! Here is how it all broke down:
I moved my tractor around to a couple of different locations and the result was the same, one side was almost 1/2 inch high. I then started measuring a ton of different locations on the tractor to see where it might be off. What I did notice right away is that the frame mount for the loader on the high side was indeed a bit high, but not high enough. Per the suggestion of s219 I then loosened BOTH sides of the mount and put some pressure on the bucket, I then remeasured and the mounts were almost spot on! I torqued everything back up and guess what....still 3/8" off. Better, but now what? I then lifted the bucket up a couple of inches and started measuring across my bucket and did in fact start to "gain" in altitude about 3/4 of the way to the high side but I could only measure 1/8" difference. I then rechecked the air pressure and per the observation of EricTheOracle when I checked air pressure I wrote off the fact that the air pressure was within a few pounds. I guess these tractor tires are not like car tires. A pound or two does make a difference!!!:thumbsup: Once I got the air pressure perfect I was within 3/16" and that seemed to be acceptable for my "mild" case of OCD!
Many thanks to all of you for your input, and my apologies if my post caused a few of you to break out the tape measures for some quality OCD fact finding of your own!:laughing: