Lifters losing pressure.

So I ran it and popped the valve covers off and everything was solid as it should be. Checked it 2 hours later, still good. This morning, 6 or 7 hours later, I had 2 soft lifters. Just not pumped up. I now know the problem, I guess I'll live with it at least for now.

Cley
Yep shitty lifters!
Well at least you know now.
I pulled my valve covers off right after running the engine and you could watch every valve close right in front of you!
Mine would bleed down in about 10 minutes!
Next cam will be a Solid flat...