My lt1050 has gotten slower over the past year. Feels like a little slip when you push the pedal. Lately it goes ok at first and then slows down after a few minutes. If you stop to dump the bags it will go fast for a few more minutes( motor is not turned off when I dump the bags). I looked under the mower and do not see any loose links or rods. My trans is sealed so I can not check the oil or drain and replace. Any ideas? Thanks.
