Holley 1850 fuel transfer tube seals??

1wildrt , yesterday I pulled both the float valves because I was watching a YouTube video stating that sometimes the o-rings that seal them in the bowl leak and can cause flooding so i started second guessing if I missed one, but they were ok as was the float valve itself, I took both the floats and submerged them in water weighted down for about 5 min then checked against each other for weight and shook them, they both seemed fine, I really feel a float must have either just been hung up or I had the leval wrong. I'm going to give it another go when I have the opportunity on a weather break.