Need help with 66 rocker panel repro giving me trouble

[msg]

Anyone ever have this problem with the height of the rocker?
Looks like the repro panel is taller in its profile than the original by 10mm or more.



Looks like I need to make a cut to the left side and remove about 10mm of the brace. Then I can bend it to reduce the height. Sound right?



I assume that GM decided that putting a plug hole in the rocker panel was to have access to clean it out, but who would really ever need to take a fender off to pull the plug and access the innards of the rocker? Would welding up the hole be a mistake?