OK, so you know I'm a new rider. I have noticed that I tend to lean forward when riding longer (more than 10 minutes) and I am wondering if it is a reach issue. I am 5'6" and have the Ultra Low seat. If the possibility exists that it is a reach issue, is the best/recommended approach to rotate the handlebars back towards me? If so, is there a good way to determine how far to do this?