I have the same problem with my Tower 75. Front bearing leak. Sent it back and they recieved it on 10/8. Recieved an email yesterday to give them a call. They said the motor would have to be replaced because of the front bearing fit. The motors are backordered. Should ship on the 31st. Hobby Service is doing a great job but the motor problem is the pits. If you get a good one they are the best but if not you have to send it back until you do. I have no reason to complain because I knew this when I spent so little for the engine. I do hate that I have to start the break in process over. It was running so good when I sent it in. It just would not shut down.