Valve Lash Adjustment

So I tried to do a full adjustment today and got some terrible results. The engine fires up but terrible idle and backfires. Something went wrong. We adjusted each rocker with same tention but I think we may have went too tight.
We tightened until the pushrod would not spin easily in our fingertips and then added 1/2 turn more. Do you think we went too tight? I was thinking I should back them all out 1/4 turn and see if it runs better loose.
My builder said its one in a million to have a bad roller cam or pushrod at this point. If there is a problem it would be with the hydraulic lifter. Those seem to have failures more frequently.