As you might know I have been looking at the 4530 and 5035. Found a 4530 that was sold october 2012, only 14 hours and comes with a back blade 7'. Any suggestions on what to look for, leaks, loose bolts etc. Thanks for everyone's help. I could buy this setup new for about $25,500 but might be able to get this used unit and blade for less than 20k. Any help appreciated.