Link is dead right now, hope it’s not permanent. But I seem to remember the steps and think I figured it out.
What I did was grab the polys in my cylinder then apply an UVW map to just those. After fitting it properly I would apply an UVW unwrap and get the desired result. But my particular weapon has 2 cylindical areas I wanted to unfold. I will attach a screengrab so you can see what I mean. Escuse the crappy model, just trying to learn this one part real quick

So here is where I had the problem, anytime I wanted to go back down to grab some more faces it would give me some message that said it wasn’t a good idea. After messing around for 15 mins, I tried collapsing my stack then was able to apply a new uvw and it looked good after repeating the process. But am just curious if I’m missing a step? It looks fine as you can see but don’t remember anything about having to collapse and re-apply. Learn it right the first time I always say. Your opinion on this technique?
-Deathcricket-
P.S. This is going to save me soo much time it not even funny. Thanks again!