i need to get my 1.5 head into the shop. how can i determine if valves are bent? i "see" 6 bent ones. what about the rest, if they are thousandths off can the machine shop tell? what kinda machining has to be done exactly to have new valves seat correctly? do the valves have to be machined themselves, or just the valve seats? changes of turbo'ing my 4g are very good if i dont move outta my parents house, but that may happen soon. all i've got so far is a new headgasket, and valve seals. there is 155k on the head. ive got until monday to come up with a gameplan, because that is when i want it out. parts- each new valve from the dealer is 18/each.