from the picture it looks like the lifter is side ways did you get chevy lifters ,smaller in dia or does the lifter bore need a sleeve ,and it looks like you have 2 lifters touching 1 lobe but i'm old and half blind.
Good eye! I turned that lifter sideways to inspect it, and it’s just a weird camera angle on the other lifter. It’s not touching the other one, it is directly over the correct lobe.
