Rockers installed wrong
Well guys....the tick is gone and it was due to the rockers being installed incorrectly.
Here is what the notes read, cyl 8 had 2 left rockers, cyl 4 were reversed, cyl 2 had 2 right rockers and cyl 3 were reversed. It's a wonder the vehicle ran as well as it did.
Technician also noted that some of the pushrods were rubbing on the cylinder head....ouch. The #4 cylinder intake and exhaust valve are worn where rocker arms contact. I guess eventually this will have to be addressed.
Thanks to those who offered suggestions on this issue.
John