I've recently purchased and setup my Hudson Oscar 330 and I am having one heck of a time getting the unit level. The track comes in 7.5' sections and I have 30' in total. I created a fairly level surface with compacted material, then used 6x6 pressure treated sections underneath the joints of the tracks. I'm using asphalt shingles as shims to get the track to as level as can be. I'm looking for any ideas to help in ease of leveling every use; I may start over with a concrete pad, but wanted to make some cash to have the mill support itself for upgrades.