If you have nice assortment of picks you don't need feeler gauges. My favorite pick is just shade under 1/16" thick and sliding it between frets and...
How did you judge the hump? Often, just looking down the edge of f/b may be misleading. get a good straightedge and lay the edge on the board to see...
Don't forget to have a closer look at the notches when you remove the strings. Look for the shiny trace on the bottom where string is in firm contact...