Jonboat, as I said, this year is my first in trad and I glued mine up fine. The ferruls & adapters are suprisingly consistant and all of my first half dozen spun great. I took some advice from here and used JB Weld. It doesnt set fast, so you can fiddle if you need to, but doubt you will. Just give them a few full twists when applying and give good pressure, then spin. Trust me when I tell you, I'm scared of everything to the N'th degree and it was so easy I felt stupid for even asking. Just roll the adapter in the JB, press and spin. Keep a paper towel and some alcohol (not for consumption) to wipe off any that gets pushed out. Apply some string wax to you insert before glueing up and screwing in your adapter. That way if you dont get all the JB wiped clean, it won't bond to the insert. It's fun, actually. Don't be affraid of them. Good heads. Mine fly as good as I can shoot them.