Dear Dennis;
It's not likely a lobe is 'going flat', but this happens.
Check the bolts that hold the rocker assembly to the head. Perhaps one or more has come loose/or was never tight.
Now; After you've made all your adjustment(s) (running), stop engine & tighten the lock nuts W/O moving the Adj. screw. Then re-check.
Also; .014 & .016 are going to be noisy if all is working right, so 'not to worry'.
The #2 Ex. might have a shorter pushrod or a bent one. If that (loose adj) 'keeps up' on that valve, (then)you may have a bad cam.
Good luck.
