Thanks Captain! The odd thing is that while the shoulder cannon rotates rather freely, it does not come out. I may just allow it to carry on.

Non-photo update, progress continues on the broadside trio. A trip to the closest GW netted me a replacement pot of Abaddon Black, so all three models received a touch up pass to clean up some of my rather untidy lines. I may do another pass of touch ups, then go on to my first attempt at a shading with Nuln Oil.