I'm almost out of my kevlar, need to buy some more. The first time around I bought 130 lb thread, seems to be working fine. I just looked at Emmakites (didn't know about them the first time around) and all their stuff is braided... I don't know if that's better or not. I've also been wondering if I should get something slightly heaver (like maybe, 200 lb)for the 24mm stuff I've been doing... but then I don't know if that'll be overly bulky for the smaller rockets. I'm typically attaching the kevlar to the motor mount, and then connecting a sewing elastic shock cord to the kevlar just below the end of the BT. What weight and style do other folks use?