Kubota steering shimmy at speed

[Surrek]

I just took my Kubota for a spin and noticed something strange, it has a bit of a shimmy at higher speeds.
It feels like the front end is having a hard time deciding which way to go.

Has anyone figured out if this could be due to the tie rods, alignment issues, or something else entirely?

 

[richwill00]

Have you tried adjusting the toe alignment? You can safely elevate the front axle to scrape the rims completely clean and check that the air pressure matches exactly on both sides.