which menas it is open waaaay too much
This may just be a choice of language, but the power valves do not regulate the amount of gas - they're just the on-off switch. A 6.5 releases the same amount of gas as a 3.5, the only difference is when.
He didn't specify the PVCR, because he didn't change it (IDK the size). You won't know if the size is correct until you select the main jet, which (as I said) controls all light throttle cruising. Then, WOT mixture is adjusted by changing the PVCR diameter, which requires a drill with the standard carb, or a new metering block.
