ORIGINAL: gibblet
all i can say is if you're having to get your strings and cables re-served twice a year - then you're getting work done by someone who either doesn't know what they're doing, or doesn't have the proper tools to do it - or both.
I have then reserved twice a year to extend the life of the string/cable.
http://www.zebrastrings.com/home/faq/FAQ.asp?btnSubmit=ByFAQ&cboFAQCategoryID=& cboFAQID=60
I take extreme care of my strings/cables. SORRY GIBBLET [:'(]
I will agree with the fact that strings aren't made by the same processes as they used to be. My PSE was a 1994 bow and the strings were definitely different even then. (maybe that's why it lasted so long?)