Double Bass Is it time to get a winter post?

Apr 24, 2014
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I've had this bass (new, fully carved, made in Italian style) since 2015, been playing it regularly since 2016. So far there's been no need to change the post; it does get noticeably tighter in the winter, but it didn't seem like any cause for alarm.

However, the top has spent these last few years very slightly caving in. It doesn't strike me as a structural integrity problem as much as just the habitual slow stabilizing of the top that happens on many new carved basses.

But because of this, I'm honestly not sure if that'll translate to more (potentially dangerous) pressure on the back. I'll try to attach a pic to show y'all what it looks like right now. It's never been 100% perfectly symmetrical, though I'm not sure if it needs to be.

20191202_204711.jpg
So there's a noticeable bulge where the soundpost is. There was always a tiny bit of it, but it seems especially pronounced now.

Do you think it's time for me to get a winter post? Or maybe even just get this one shortened?