well i got them last week and installed them. the added wieght is nice to have and my hybrid really lauches those heavy arrows. but my arrows are showing signs of being stiffer. im ordering a field tip kit from 3 rivers to see whats up.  also realized tuning arrows would be alot easier if i could start longer and cut them down myself to play around with. so last night i ordered a arrow saw and fletching jig. next week im ordering feathers, fletch tape, insert glue, field tip kit, and g5 arrow square.  hate spending the cash but it just sounds like it will be worth it in the long run