I use the TW automated customization tool. You need the length, swingweight, balance, static weight and what you want for the target swingweight, balance and static weight. The main headache is getting the swingweight unless you have access to an RDC machine or the iPhone App. In general, nobody provides swingweight information when selling pro stock frames so you have to guess or measure. When I get all of my frames, I'm going to go have them measured so that I can do the frame matching.