Help with Valvesprings and valve float. Noob

Cudafever said
Is this just some kind of stain or is it bumpy ???
Do you have a GOOD ground from your battery to a clean unpainted place on you block?
View attachment 1715403940

Some type of stain. Under the anodized blocks.
Battery is in trunk. Ground from engine block to frame. Battery in trunk is grounded to frame.