When I stripped my car last year, I noticed the top was a little flimsy in the middle. (55 Hardtop). Today, when running a DA and mud hog, if I leaned on it a little it would go down a little, maybe 1/4" to 1/2" but come right back up. Not quite what I would call it an oil can- more of just spongy or soft in the center. 58 year old steel, or an issue?