My l5740 has steering issues the steering wheel does not always turn the wheels, when it is not warm. Once it warms up and is full throttle it gets better, sometimes doesn't turn completely. You can stop back up then go forward again and it will work fine for a little bit. I talked to a dealer about it and he said to start by replaced all the hydraulic fluid and two filters, we did that and it helped but very little. My son seems to think it is slower on the hydrostatic forward and backward then when we bought it used three years ago. Any ideas would be appreciated.