Put it this way. If you bring it to level by putting something like a piece of sorbothane under one corner, that piece of material (whatever it is) will have a greater impact on the sound than the one degree.
My table has been mounted on the same massive (close to 600 lbs) stand for well over a decade now. Level at one time it must have settled because when checked recently it was a bit off. Not that I noticed. Anyway, it left me with a couple options for adjusting it back level. Main thing I noticed was even when using shims under the platform- not even the turntable itself but the platform under the table- the material used made a difference. Never did hear any difference being level. But what I did to get it level, that DID make a difference.
My table has been mounted on the same massive (close to 600 lbs) stand for well over a decade now. Level at one time it must have settled because when checked recently it was a bit off. Not that I noticed. Anyway, it left me with a couple options for adjusting it back level. Main thing I noticed was even when using shims under the platform- not even the turntable itself but the platform under the table- the material used made a difference. Never did hear any difference being level. But what I did to get it level, that DID make a difference.