I just bought a used TTHP 17/52". I think it was made in 2001 judging by the serial #. Is there a kit available that I can add the parking brake to my unit that comes standard now? Does anybody have a part # and price? Also, what kind of blade do most people prefer? I'll be heading to my dealer tomorrow to check on the remainder of the warranty and need to pick up a new set of blades. BTW, thanks CharlieBingo for the great deal. It was worth the drive and a pleasure to meet you.