So, I got three questions about the games i'm currently playing.
Firstly, about the Grey Army Base in Underrail.
My objective there is to drink a bunch of gun lubricant with Dude to unfuck the Juice in our system, right? Is it possible to find actual gun lubricant other than the quest item and use it like the sharpening stone on my guns? Or is this a one-off quest item that I have no use for? Most importantly, can I also drink it?

The second one is about RT.
I decided to arrest Governor Vyatt when I arrived on Janus. Will that change anything regarding how the quest progresses? When I first did it in my last playthrough, all I did was go along until the very obvious reveal she was a Slaaneshi cultist.

And, lastly, this one is about Disco Elysium
I went with a high Perception set for Harry and managed to find the bullet in Lely's corpse. How much would that change up the going of the plot, now that I know it wasn't any of the Hardie Boys' pistols that killed him?