When to adjust valves? oil change? On recent motor.

When you changed the break in oil, did you cut the filter open & see if there was any trash in the filter? You might want to do that, just for peace of mind. As far as adjusting the valves, it might be to you advantage to run them every once in a while just so you know they are still within spec. If it were mine, after I made a couple of hard passes at the strip, I would run them.