Gusto I have never tuned a motor with PC pipes on it but depending on your elevation your main may be a little big for the CPI pipes it will be close.
Sleeper you think it wanting that big of a pilot had anything to do with the reeds? That is a really big pilot for those carbs I usually only run into needing that big on one on FMF pipes but I have also never put 4'S on a motor yet.