According to my official Holley chart and the Holley web page
http://tinyurl.com/y68zdppq#50 jet is .049" drill
#51 is .050" drill
#52 & #53 are .052" drill
#54 is .053" drill
#55 is .054" drill
Are the sizes you gave the drill sizes by test? Do the jets appear unmolested?
Primary MJ + .038" PVCR + .059" secondary = WOT jet areas (2 each)
.050" .011663 In.2
.051" .011822 In.2
.052" .011984 In.2
.053" .012149 In.2
.054" .012317 In.2
Each successive drill size adds about 1.4% to the total WOT fuel, 14.7 becomes 14.5 etc.
To compare any change divide A by B.
