RE: Carbon Arrow Spine
Ok, I just did some checking, Gold tip doesn't offer as many arrows as I thought they did, but they do have a traditional series that has a .400 spine and weigh a tad over 9 grns per inch. They look like wood arrows, but are not. So they would work if you wanted to try them. However, like I said if you shop around you can get carbons even heavier if you want.
I am assuming the bemans you have are camo, right? If not they don't weigh as much as you think they do. You can also get weight tubes to put in your arrows as well, or just use weedeater cord. Then you can match all your arrows in weight as close as you want to. I have tried it, it works pretty well.
Remember if you get heavier inserts it effects your tip weight which will increase your FOC and weaken your spine. Just like putting a heavier tip on them. With the tube or weedeater cord it distrubutes the weight more inside your arrow.
I don't think the weight difference is that big of a deal any way. It only works out to around 25 or 30 grns difference for a finnished arrow. That is the difference between using a 100 grn and a 125 grn head. Both arrows are in the same weight range pretty much. Unless I am looking at the wrong arrows or something.
Paul