first set of wheels i rebuilt i made the assumption that tension should be as high as possible because lots of force is put on the spokes. i got it tight as **** and true, thought "nice." leaned them against the wall and went to watch TV, after about 15 minutes i start hearing PING... PING PING. i went to look and saw a spoke hanging out of the ceiling, that **** was exploding. felt like i was diffusing a bomb when i started lowering tension.