New motor, loose rocker...

I like the above I mean it should take you a half hour to get another 15 to 20 miles on the car and then you'll know. Obviously you'll measure the cam if you're taking it out to put a different one in. And then you'll know.
And when it comes to cams I always say call Ken at Oregon cam grinding (personally I like an old guy who's been there and done that and owns his own shop is willing to talk to a guy for free) who is standing in a machine shop with thousands of Cam surrounding him and that's all he does and he races many of them. Unlike Hughes who does not manufacturer cams. Likely most that just have a tech line with people reading off their graphs given your specs..
I'm sure you already know that though...