Hi I;m Sam. I am currently having the issue of my bridge tool not closing. I am modeling the main part using polys and then i insert a disc that i want to bridge to. When I start bridging the points together one will connect but then not the other. It looks fine but if i move the point that i just bridged to the edges of the polys arent connected in some spots. Im tearing my hair out!!!
That's a odd one.
Try to even the normals then brige once more my or alternativly try to weld the point together. If you deselect Visible only on your Select tool then select each point and m+q to wield.