Why isn't the Engine Plate Decoupler decoupling?

[r4pt0r]

First time trying to use these engine plates, and I cannot for the life of me figure it out. I have an engine under its shroud and so(ignoring the staging on my screenshot) when I stage the engine plate it should drop the lower fuel tank(and the shroud id think) correct?  It isn't. I read staging it made it drop everything on the lower node. It lists a decoupler force percent, so it must decouple somehow without another part...

  

 

This is what happens after staging, and throttling up. It just explodes the lower bits.

 

Oh by the nine, my issue was the engine, the Mastodon and the engine plate(set to long) have lower nodes at the exact same spot. You can see the textures fighting to be on top of one another. Its grabbing the wrong node. Not sure how to work around that, but the issue was on my end all along, sorry.

 

Edited June 25, 2019 by r4pt0r

[bewing]

38 minutes ago, r4pt0r said:

Not sure how to work around that

Take off the engine, attach the bottom stage to the decoupler node, and then put the engine back in again.