My fence is not sitting flat on the table, there us a 1/4" gap closest to me. It also likes to lock itself out of square and seems misaligned. A rickety shed floor compounds these problems.
Strictly FYI, there should always be a gap between the fence and table -- nowhere near 1/4", but an even gap the length of the fence. A typical gap will be somewhere between 1/16" and 1/8". This gap between fence and table ensures that stray sawdust collecting under the fence will not build up and interfere with the fence alignment. Sawing of material thinner than this gap will require an auxiliary fence be affixed to the main fence, one that does ride flush (or nearly so) to the table.
If you have an uneven gap then something is either incorrectly adjusted, an initial setup error made (it happens, we've all been there), or there is a manufacturing defect (which would likely require replacing the offending part or parts).
If the fence being used on these saws is a typical Bessemer style T-square fence (I believe it is) then it should lock square, always, when properly setup. However, depending upon the design, it may not always ride square when unlocked, but should always square when locked. Some fences have an extra set of adjustment glides to maintain a square fence when unlocked, but most do not have this feature, so when setting up the fence it is only the locked state that one should concern themselves with when adjusting for squareness. If after thorough and careful setup and inspection it should still fail to reliably lock square then the fence, or a subcomponent thereof, may need to be replaced.
I wish you the best in your move and hope all goes smoothly...I dread the day I have to move my shop in a couple years.
PS -- Most Bessemer style fences have a pair of adjustable glides on the top of the portion that floats on the front rail that is responsible for setting both the glide height if the fence (at front of saw) and which also adjust the fence to be perfectly perpendicular (90deg) to the table. This is most likely the adjustment that is causing the front of your fence to ride abnormally high.
