have had 287b and inside of tracks keep wareing out heaps!!!!!!!!!!! when looking frm back off machine looks like axles are bent cat replaced once but still has problem they cannot fix. This has been a big b problem for me as reduces life off tracks by 30 % cat has been hope less to fix problem.Hi we are looking at buying a cat 287b just wanted to get your thoughts on it we got ride of our t300 this fall and wanted to try a cat thanks for your help