Thanks for everyones reply.

Bigpapascout,
Will a straight fletch work good enough for mechanicals. I am trying to decide if I want to go with helical or straight.

Bigpapascout,
Thanks. for helping me out with my match problems but what I need to know now is, in what situations would you use the 1 deg offset and the 6 deg offset. Give me an example, if possible.

Thanks.