drj32, not sure whats the problem bro
sry i didnt respond earlier, i checked bball-reference and i forgot to pm, i think your problem is one. You are looking formula for 70s or early 80s, right?
Because when i reviewed few last seasons, i see really few teams(1-5) with 7200 FGA max, mostly 6000-6800. league avg is almost always 6600-6700. I dont see problem there.
It can be problematic for 70s/80s if you forgot to reduce 3s. Im not 70s specialist, so i never checked this, i think slimm also, but there is huge chance that there is some hardcoded things in game that wont allow to have ~7500FGA( i think it should be even 8000

for 70s)
One more time i dont see nothing weird in my rosters, but its late 80s, 90s, 00s and current, 70s can be problematic for you.