[lurkingknight]

no such thing as water damage. Either it cycles or it doesn't. Water in the gun just shorts it so it would shoot all the time. But since it's a simple electric circuit, that's unlikely.

POS wire getting hot is from resistance, from the fuse, from the wiring, from extra inefficient connectors, from messed up shimming or motor height. If the motor is not getting hot and sounds fine, shimming and motor height is probably not an issue.

You can fire an AEG underwater if you really wanted to and electrically and mechanically it would work just fine until the action of pumping water slowed the piston so that the sector PMEs and destroys the piston. There's a number of videos on YT featuring exactly that.

POS wire can get warm on stock guns though, that's the nature of the shitty electrical system from factory.

Either he didn't notice or there's added resistance in the system somewhere. Read above.