Welcome to the FunFinder family !
Sorry you feel that way about the quality control on your 210WBS. I guess I was extremely fortunate on our '08 210WBS (bought new in February of '0
. The only "factory issue" I had was on our maiden voyage, the "P" trap on the galley sink came loose. Tightened it up and it came loose again. Vibration would cause the nut to loosen. Put some fusible electrical tape on the nut (two turns on the nut, up on the pipe one turn around it) to keep it from vibrating loose and that fixed it. That's engineering though, not QC.
Only two other problems, not CruiserRV issues. Jensen DVD player stopped working the 2nd year (Jensen is, unfortunately, not known for their quality any longer; in the '70's the made quite good automotive electronics). Early in the 3rd year, I developed a tiny leak in pouring rain around the front window. My fault...I failed to detect a hairline crack in the caulking...should have caught it in my twice yearly inspection of caulking
I've made a lot of "improvements" (I'm like Tim the Tool Man Taylor; LOVE to tinker!), but, the over-all build, fit and finish on ours was top-notch. Some friends wanted to get into RVing and liked our rig so much that they went out and bought a used '08 Commander and a new '11 FF 244RBS (they have three adults and the 210 was too small). They, too, suffered the "loosening P trap" syndrome, but, I told him how to fix it and they've been on the road now for 3 months without further incident or issues.
Maybe yours was a "late '08"? CruiserRV started a fairly large expansion in their lineup for 2009-2010 and I would imagine that some QC took a hit as they worked the kinks out of the assembly process for so many different models.
Hope you get the kinks worked out so that you can enjoy, what I consider, one of the "best bang for the buck" trailers made