I Just put my bike back together when I notice that the sending unit is leaking fuel. I did take it out to get the tank painted. How do I get the fuel sending unit back in without it leaking

 

technically your supposed to replace the black rubber gasket when re-installing the fuel pump
mine has never leaked though and I've taken it out like 20 times in the last year (don't ask)

the important thing would be where is it leaking from, one of the hoses or is it from the fuel pump itself?