The increase of head weight i refered to, would be for test purposes only. It sounds like you might need to drop spine, but first i myself would go up in weight to make certain spine is the real issue before I spent money.

Ok. That sounds like a good idea. I will give it a whirl. Thank you

I put them on, if for nothing else to find the arrow easier if I goon up a shot. Plus any weight change on the back of the arrow has an inverse and magnified effect versus weight change on the front of the arrow, I however don't bother with the feather quills.

I guess another question I have is this. I shoot rear 9.5" back tapered douglas firs. Ive also used 9" back tapered POC. Of course I used both types of wood in parallel shafts as well. When I changed over from parallels to tapered, both very well known shaft makers told me that the spine differences between parallel and tapered shafts, was so slight it would be insignificant, and that it was a very high pecentage chance, that I should order the exact spine shafts id been using in parallels, and they would very likely end up being the same length, as the parallel shafts in tuning them out. I found out that in making that size of back taper, 25-30 gr worth of wood is removed.....yet they said no spine changes would be necessary. I tested extensively, and I found out that they knew what they were talking about after all. Think about that, when thinking about these wraps changing dynamic spine..how can it be so, when the back taper effects spine so little? That taper is 11/32"down to 5/16".

I entered into this trad thing thinking things would be easier. I think I'm spinning my wheels most of the time but if it wasn't for this I'd golf more. That's another level of frustration all together.

Added 50 gr. Shaft straightened out.
Longer 300's
Shorter 340's
That is the question

Either way you're buying new shafts. Depends if you want longer arrows with a bit more weight, or shorter somewhat lighters one's. Your call.

I think I'm going to go with the 340s. Longer arrows than I have now would be a pain. I still haven't found or learned how to use a back quiver. Thank you