Made a big mistake when adjusting valves, Time to admit it Options

[rjames]

I copped to this in another post, but didn't mention the extent of the 'misadjusting' that I did. In short, *I think* I adjusted some or all of the valves when open. That is to say, when a valve was fully closed, I adjusted the opposite valve ala Krusty's method. No need to comment on how stupid this was, I get it and know how to tell when a valve is open vs closed now.

After the error was made, the engine was ran for ~5 minutes, at low RPMs. It has hydro lifters. Not surprising, it was noisy and had low power.
Since then I've done a proper valvue adjustment and ran it for another ~5 minutes, and it's still noisy. Not as noisy, but noisy. But with hydro lifters I'm used to noise when the car isn't driven for awhile and then it quiets down but I was afraid to run it any longer.

I plan on rechecking the valve clearance one more time before starting it up again, which I will do only because I'm at the point where I'm accepting that a rebuild is likely in my future sooner than planned.


So:
What is the likelihood I did permenant damage to something by setting valve clearance with the valves open?
My mistake resulted in a way too loose setting for some/all of the valves, so much so that the vavles may have not opened at all or opened very little when I ran it.
Given the short time I ran the engine, isn't the extent of the damage likely just to be potentially prematurely worn pushrood and lifter surfaces? And maybe there's a chance that it's noisy only because the lifters still need to do a lot of pumping up?

All of the rockers are intact (save for any cracks I can't see). All of the lifters seem to have a bit of air in them as I can compress them with the pusrhod via the rockers a bit.