Kubota’s website indicates the LX4020 has “hydraulic power steering”. Assuming that is correct, yes your experience is normal.Every time I use my lx4020 the steering wheel is ends up in a different position. I have a spinner knobs positioned at nine o'clock when going straight but after using the tractor it ends up somewhere else. Is this normal?

No, it will not.If a tractor with this type of steering is parked the same way with the steering wheel in a certain position, will that take care of the problem?
No. You just have to get used to it...it's just one reason I don't like 'spinners' on my tractor.If a tractor with this type of steering is parked the same way with the steering wheel in a certain position, will that take care of the problem?
Both of my Kubota tractors had spinners. Sure they drifted a bit but they were very handy regardless for loader work, mowing, etc. The hydrostatic power steering prevented kickbacks that were the curse of having a spinner on old-school tractors back in the day.No. You just have to get used to it...it's just one reason I don't like 'spinners' on my tractor
Nope not at all.If a tractor with this type of steering is parked the same way with the steering wheel in a certain position, will that take care of the problem?