it's quite simple. First adjust your spokes so that there aren't any loose ones. Give them a ding test. Make sure they all sound nearly the same. Adjust the spokes for same tighteness. Then Wire brush each spoke-nut. Blow each one with brake-clean afterward. Then squirt an 1.25" circle of Shoe Goo around and over the spoke-nut at about an 1/8 above the spoke nut. Do 4 of them at a time with the ones that you're doing horizontal. In 10 minutes there will be a skin on the Shoe Goo that will keep it from slumping while you do the next 4 and so on. Lick your finger liberally if you want to smooth out the Shoe Goo. A few bubbles in your sealing job won't hurt. Use a steel Valve stem from Napa Or???. You will have to drill the valve stem hole a little. I'm sure that there are valve stems that wouldn't require drilling. Make sure that there's a rubber washer on the inside of that valve stem at least and Shoe Goo over the top of the back side of t