I may have answered my own question. I went to the tuff tq web site and I have the K57R tranny which is beefed up somewhat version of the K46. So I may be all right, time will tell. Problem is, or at least with me. I tend to listen to some of the bashers out there on some of the forums that have nothing good to say about anything other than there brand of mowers. I also no better than that but sometimes I get caught up in the hoop la as others. I feel I made a good choice based on my budget and size of mower I wanted to replace what I had and feel confident that this will be a great mower for years to come.