I'm an admitted rookie in the realm of traditional archery. So be gentle with me here.

How do you know if you have the right spine and point combo? What am I supposed to be looking for?
I'm shooting a Bob Lee takedown recurve, 47# @ 28". I've a 27 1/4" draw. Shooting Beman Centershot 500 spines exactly at 29" long.

Here's what I know:
1. When using a 150 gr point+insert, I see hardly any flex in the arrow at all. Coming off the bow it just looks like a dart. I shoot cock feather out, and the lower hen feateher is rubbing on the side plate enough it is wearing out the feather and leaveing "dust" on the bottom of the side plate.
2. When using a 200 gr point+insert, that arrow is flopping around pretty good as it comes off the bow. To me it looks like a LOT and it shows in the I-phone slo-mo video pretty well.
3. When using a 175 gr point+insert, it's kind of in between. Obviously.

How do you KNOW if you have the correct spine in the arrow/point/insert/feathers/nock combo? What do you look for?