Thank you for the advice everyone. Good stuff. The bike does not have shocks though and I did replace the tires 10 years ago with tires that are smooth on top and have knobs on the sides. They do pretty well I think. I will definitely move the seat forward if it has no bearing on knee safety. After moving it back to make sure that my knees were over the middle of the pedals, I do feel like in am leaning back too much. Thank you again.