Holley 1850 fuel transfer tube seals??

Thankyou, i did watch several videos on this, a couple were from a Holley executive, but what I understand is that the start point is to set them static with the bowl inverted and the float level with the bottom, ( well top actually as it's upside down at this point ) of the bowl, which is what I have done however if I understand you correctly you are suggesting otherwise, doing it your way will there be enough fuel in the bowls for the engine to start and run while I do the adjustment?
If your pulling the bowl off then yes, flip it and look at the float, however I tend to intentionally set it a touch low so I know I need to rise the level when the engine is running....

The other method is when you leave the bowl attached to the carb and just pull the needle/seat....

Either way if you know you have the float level set to low and it's still flooding you need to take a close look at other possible causes...