NextGEN still not working properly–are there more fixes to come?

I’m still having problems with NextGEN. The “center” option does not center my photos, I’ve lost tons of the centering on photos I’ve uploaded to my site through NextGEN over the years, and the ONLY way I can add more than one photo to a post without nextGEN and then wordpress crashing is if I save draft after every photo addition from NextGEN.

Someone had mentioned completely uninstalling NextGEN and reinstalling the latest version rather than relying on the update. Can anyone verify if that works? And more importantly, if I were to try that, what would happen to all the pix on my site that I’ve added over the years? Would they still remain intact when NextGEN was reinstalled?