Looks like the #1 ex lobe is .035” shy on lift compared to #3.
As I recall, a lifter can be retrieved out of the valley thru one of the open areas of the head.
Id pull the one out of #1 exhaust for a peek at the bottom of it.
.332 x 1.5 = .498
That’s a big ask out of the springs that go with rotators.
I pulled #1 exh lifter with a magnet but the drain back hole is not big enough to pull it out. I was able to rotate it around. It actually did not look bad. It certainly was not chewed up.