Drive Devilbiss Healthcare - Stds1M2226 - Medical Seat Upholstery, 26" Sentra Ecxw

Description of product is deceptive. It states that a dual axle provides easy transition of seat height to hemi level. It is set at the highest seat level, and there is a a second axle in the back that would make the seat lower, but the wheel is screwed in so tightly to the axle that it is impossible to undo it. Also there doesn't appear to be a way to lower the seat height in the front. There are no instructions about this. The only instructions are for how to adjust the seat to a different depth. Nothing is mentioned in the instructions about hemi - level. This wheelchair will have to be ret