I use a Pro Kennex 5g with a 16 x 20 open pattern, strung at 62 lbs (65 is max recommended). I have never broken a main, only crosses. This is using a soft string, Tecnifibre NRG2 (17g). Breakage isn't premature but I keep reading that mains are supposed to break first, not crosses. Is this normal with a soft string or does it reflect something else? It's a one piece string job, does anyone recommend going 2 piece with a hybrid? Thanks.