Thanks for your feedback Bladecutter. The seat is all the way down. Don’t know why you think the manual indicates two separate handles… It clearly is referencing the same handle in both the diagrams on adjusting the seat, both back and forward, and up and down. It doesn’t mention or indicate a second lever or handle.
I just took another look at the mechanism under the seat. It looks like the frame is solid and nothing is designed which will allow if any movement up or down. I think this may be a package feature which the LT may have and the LS does not. It’s a bit confusing since the owner’s manual doesn’t differintiate between the two models and states that this feature should be available.