It's possible, but you'll have to fabricate your own seat rails, which means a lot of time & effort has to be spent on getting it right. Why do you wanna lower it? Why not just use the knob on the left side & lower the sit like that?
I have been using that. Was just curious if lowering the seats was possible without a lot of trouble. Fabricating custom seat rails seems like more trouble than I'm willing to work with right now. Unless I grow a few feet in height sometime soon