I popped open the coffin cover on my 1985 offshore 24 that I'm refurbishing. My question is that although it looks good and looks to be an aluminum tank before I clean it up (I have not removed it) does anyone have experience with these? It looks original, no noticeable pitting or issues, can't see the bottom since I didn't pull it. comments...suggestions? Should I pull it for inspection or are these good? I'm leaning on pulling it.