The discription of nocking point placement is always confusing. "Put it at 3/8's." Above what? "Above parallel." Parallel to what?
Look at Therifleman's comment, "I start my tuning with nock height adjustments and almost always end up with 23/32" (measured to the bottom of the top nock point)---with skinnier shafts." The comment is right on, but when you get down to 23/32nds a very skinny shaft is going to be different than just a skinny shaft. I don't really know if a 1/32nd is going to make a difference, but a 1/16th or an eighth sure will. I can't see well enough to see a 32nd, lol.
I suggest putting a T-square on the string. THe bottom of the square is exactly parallel. Put the bottom of the nock on that parallel line and put the nocking point 1/8 above the top of the nock.
That gives you the same nocking point for very skinny carbons and fat woods. Then tie in two nocking points and leave the tag ends long. Shoot and adjust according to Brian Water's diagram. You will most likely only have to move the NP a strand or two of serving. Once you have the point correct, pull the tag ends tight and either burn the tag end or superglue. I've heard of superglue eating bow strings - don't soak it. I've never had a problem with a circular dab.
When it comes to spine, I can't help, because I don't know what spine your shooting. Give me deflection. I will say that a Toelk is a pretty fast bow. If your last bow was slower, that could be the reason for high hits, but that's the reason we use impact of bare and fletched. Learn www.fenderarchery.com/blogs/archery-info/basic-tuning and you'll answer questions on tuning not ask.
Bowmania