One thing I'll say that has nothing to do with cue building, but just epoxy in general (which I DO know a little about), WEST straight out of the can is a laminating epoxy. It's designed to do laminations and fiberglass. It's not a structural epoxy and has poor gap filling properties. Structural epoxies have fillers...wood flour and things like that, for example. This is partly why structural epoxies tend to be thicker and are cloudy when you mix them.
You can make WEST into a structural epoxy by mixing in some filler. Then you essentially have something like a T88 (which I actually like a lot, BTW), but of course you'll need more clearance.
I guess what I'm saying is whether you're making cues, boats or airplanes, you need to match the clearance to the specific glue and mixture you're using. Epoxy is particularly tricky because you can actually make a starved joint, even with just too much clamping force. That's practically impossible to do with traditional wood glues (Titebond, hide glue, etc) without industrial clamping pressures, but it's incredibly easy to do with epoxy. You can even scrape it out when inserting something like a core and end up with a starved joint if you're not paying attention.
But if you're life depends on it, like an airplane wing, the go to glue is Resorcinol. I'm not sure it really has a place in cue building, though. Maybe laminating veneers. It likes super tight joints and high clamping pressures.
Anyhow, that's just $.02 from someone with practically no cue building experience, but with a little glue knowledge.