Well, the lobe taper is not staggered, so that’s not correct.
If you someone with a lathe....... mount the cam in the lathe, preferably on centers.
Indicate across a couple of bearing journals to make sure the cam is parallel to the centers.
You’d like to see solidly less than .0005 difference front to rear of the journal.
Now move to a cam lobe on the base circle.
Indicate the taper front to rear of the lobe.
Stock stuff is usually under .001” taper.
“Most” of the name brand performance stuff is .0015-.0020.
See where that is before going any further.
If the taper is way high(which I suspect it might be...... get a new cam and move on.
Since whoever did that one seems to not know about the staggered taper for SBM....... I’d probably get the replacement somewhere else.
