Wis, as has already been stated on here, order your string and cables from Gibblet.
I have an SQ2 that is 5yrs old and replaced the original string and cableswith one of Gibblets sets.
My pro shop was so impressed with his string, that they keep asking me who I got it from every time I go back in.
Not to mention that the bow shoots so much nicer, that I have changed my mind about buying a new bow.