Recap
1 - You changed springs and more radical solid lifter cam
2 - You saw a valve/spring leaning away
3 - You see marks on a retainer that see something was hitting
4 - Everything looks square now
I'd take those heads to someone check to see if you have a broken guide, check open and closed pressure, coil bind, and retainer to seal clearance. It could settle back straight I supposed, but if a guide was broken, it will be clear when taken apart.
FYI - Comp recommendations are often wrong, more than right, because of the various different ways heads can be set up
What are the specs of the cam, and did you degree it, did you check piston to valve clearance? Not trying to reinvent the wheel, but it sounds like things need to be checked closely with real numbers