So here I am March 2021 and I see nobody has a real solution to the drivers seat sliding back further than the stock slide allows. I am only 6 ft but have a bad lower back and I've just purchased this 2016 SV crew cab and already I need the extra leg room. My left leg is able to fully straighten but not my right because of the pedals. I was told by the salesman ( Lincoln dealership) that I can get different seat rails etc to suit me. I think I just need about 3-4 more inches to slide the seat back and it would be great. Long trips are going to be terrible for me and no lumbar adjustment is another bad loss. Has anyone found a solution ?No, sorry man, I am one of the ones that was complaining some and looking at possible solutions. The only real solution there would be at this point is to modify the stock rails in such a way that you slide them back some. It would involve cutting and welding and a little fab I am certain but I just have not had time due to my travel/work schedule.