We own a 2016 Wildcat Maxx and had a floor that also got wet every time it rained. After looking and caulking the areas you mentioned I finally found the leak.
Not sure about your Wildcat, however, our Maxx has a "belly band" about 2'-3' above the bottom of the trailer that runs all the way around the unit. Upon close examination, the top of the "belly band" had pulled away from the trailer fiberglass side and there was a split in the seal. I ran some water down the side of the trailer directly above this split and sure enough, the floor became wet. It's been well over a year since I resealed the area and there has not been any water intrusion since.
Just my experience, you may or may not have the same issue but should take a look, especially if your unit has the "belly band". Good luck!
Days camping (2016)----181 days
Days camping (2017) --- 82 days
2016 Wildcat MAXX 28RKX (33' TT), 2007 13' Scamp
2015 Ram Laramie Hemi, w/air suspension
30 years RV'ing
11 different RV's