I use 8125 and use a turnbuckle to add about 300 lbs. of pressure to my strings when I serve them....Zero creep and 8125 doesn' t " fuzz" like some of the others....My string jig is VERY primitive compared to most...It' s simply a 100" piece of 2" box tubing with a post on one end and a post with a turnbuckle on the other.....I use " quick-links" to adjust length.....I' ve made dozens of strings on this jig and they are are as good as any I have purchased....Total cost for jig......$24......