I've got a house that I'm fixing up over time, and I'm looking for some help. Long story short, bought it distressed, fixed foundation issues in back of house and replaced subfloor. Had major plumbing issue and crawl space completely flooded (had 4 feet of water in it). Pumped water out, dried it out over the next week, and now three months later it seems floors are bouncy in living room where the original floor was and kitchen where I replaced subfloor. Looking under house, everything looks ok. House was a kit house from the 40's, and all wood looks good. The 2x8 beams connect to center support, which has concrete blocks supporting it every 7 feet or so in the middle of the house. Wondering if water flooding crawl space made blocks settle. Have small access to crawl space via the closet and trying to avoid tearing up original hard wood flooring to address issues. Might be able to punch out vent screens along side of house to allow for additional boards to be feed into space so they can be sistered onto the existing 2x8s, but don't know if that's the best course of action. Question if adding additional supports to main beam in between the existing blocks would help. Have thought about adding cut 2x4s as cross bracing in between joists at bottom of joist (to help stabilize) and transfer weight to adjacent beams, but don't know if that would work. Have also thought about adding a middle support to help offset flex in living room, but thinking this may not be best plan either. Looking at options, so any help is appreciated.