Hi. Was cutting yard and transmission belt happen to come off. After putting belt back on, started mower and put lever in forward position. Mower would not move, began to observe smoke coming from underneath where engine pulley turns transmission belt due to belt not being able to turn transmission pulley. When gear is in neutral I can push mower, but if gear is in forward or reverse, cannot push mower forward or backwards. And I notice that when trying to push it while in gear, one wheel turns one way as the other wheel turns the opposite way. Haven't broken down transaxle yet, but was wondering if anyone has had this problem and is it easy to correct it ?