Crookedaxle
I'm Awesome
I'm having a hard time following you.... blue sealant? You've got lots of yokes, and I'm not sure which ones you're talking about. The slip yoke will have a missing spline, and the spline shaft may have a matching wide spline to match.... not sure on this as my experience with the 2-piece shafts is limited. However, that missing spline is designed so that a shaft can only go together one way.
Caitlyn Jenner???
The male splines have a bright blue plasticy coating on them. It is the color of blue Loctite and looks factory to me. I'm assuming it's to prevent corrosion or take up some of the clearance between them. Not much came off when I took them apart so I left it on. It didn't really keep me from separating them because it slid free in the area it needs to in assembly when it's on the truck. It seemed to be the rubber sealing cap sliding over the splines that was the culprit. The reason I asked about the missing spline on the slip yoke, is that I was wondering if it's just a universal slip yoke that's used in other applications and there is no matching missing spline on the male splines of the shaft and that's how it could have gotten assembled out of phase or if there is a missing spline on the shaft and it doesn't matter if they're in phase or not or it's a factory screw up. I couldn't tell if there's a missing spline on the shaft or not since the blue coating filled the gap of the missing spline from the yoke. I didn't want to pick it apart to find out. It didn't have any vibration until my universal joints went to hell so that's why I left it like it is. It's going to have to come apart again to replace the hanger bearing anyways. Yes, I should have taken pictures.