I asked them that question. Answers!
I found that MLE has a live chat feature, so I asked. Here is the text:
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Sarah: Welcome to our real-time support chat. How can I help you today?
Guest: Your sales literature on line does not state whether or how the spider lift tracks are adjustable. Can they be used to level the machine? (Teupen does)
http://www.arboristsite.com/showthread.php?p=1367996&posted=1#post1367996
You may wish to bring this thread to the attention of the sales department.
Sarah: The tracks are adjustable in an out (up and down) for driving.
However we have an automatic leveling system for the outriggers while the lift is being used
Guest: My question remains unanswered. Do the tracks adjust independently to accomodate changes in grade while driving the machine across a slope? Outriggers are only good if you are parked.
Sarah: I see, let me check on this for you really quick. can I get your name, number and email in case we loose connection?
Guest: David Little.
[email protected]
Sarah: We also do have the independently adjusting tracks as an option
Thank you David for bringing this question to our attention
Guest: Thank you for answering. Bye.
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So if you think you need to level your machine, you can pay extra! I can't believe that would not be standard option. I guess if a machine was only used indoors, that would allow the machine to be cheaper to buy. But that also makes it more expensive for the majority of applications.