Double spreader, swept vs straight?

[rpack]

All Right Fellas!.
Now we're cookin' Something to get my melon wrapped around. Learning for me is much better done with a "problem" in front of me. The mast section of the new mast is slightly slimmer than the old, I don't have the numbers on tap right away but the moments really can't be more than the old, the mast came off of Mr Jacketts personal boat and has all the bells and whistles according to the marine surveyor who sold it to me (yes I know about salesmanship). I'd post pictures but I'm not a grownup yet on this forum. I won the bid on Ebay for $300, having the mast shipped now. My best estimate for a new replacement came from Buzz Ballenger and was several orders of magnitude more. I don't have a problem with less weight aloft but I'm afraid the slimmer section really needs double spreaders. Thanks to both of you for the input, the best information comes from those who do the work.