I'm hoping to get a response from the Wright representative on a few things. I am purchasing a used Sentar tomorrow, its the 52" 23 hp kaw model with around 600 hours on it. I have a few concerns though. I have read that there were a lot of issues with the earlier models (I'm not sure if this one fits in that group, serial number is 15762, model number se5223kawe and I believe its a 2001)and I wanted to know what they were, can they be fixed, and if mine is one of those units, will Wright or one of your dealers cover the cost? Also, I was told the idler pulley needs to be replaced on this particular unit, is there a way to obtain literature on maintenance and repairs of these units? I downloaded the parts list, but I'm more interested in a "how to" sort of thing and also regarding the parts list, it's a little confusing as far as spindles and the pulley are concerned. Did Wright produce upgraded or newer versions of these parts?