so I pulled the head and had it rebuilt and took about .050 off for a little bit more compression. I reinstalled the head and torqued per the FSM and have run it quite a bit trying to get is properly tuned. The issue I am seing now is white smoke from the exhaust until the truck warms up. Its not real thick but its there. Once the truck warms up it goes away. Ive adjusted the valves three times since I put the head back on and have re checked the head bolts for proper torque. I am afriad the head gasket has failed again. Also how often should I have to set the valve lash? the exhaust valves are brand new so I expect some expansion from them but I cant seem to keep them in spec.