You know that was my thinking as well and the last time I drove the car I brought the 7/16 wrench and a thin screwdriver to make an adjustment on those.. but of course I have to take the air filters off to watch them. The last time I was out I was just kind of enjoying that the car was running so well, I didn't stop and make any adjustments.. I'm wanting to take the carburetors off anyways for testing the fuel side of my nitrous setup. I have those 78 Jets and I'll put those in.. also on my next test drive I will go ahead and take the filters off and make some more adjustments with the doors before I go any lower on the secondary Jets.. the yellow pollen coming out of the trees is so thick I just don't like running no filters at the moment.. which reminds me I need to clean those k&n filters as well...
I know they do open but they don't like flick wide open..