I just finished my first valve adjustment on my car. I've only owned it a few weeks but it was due an adjustment. It is not really that bad as long as you have some mechanical inclination. I've yet to start my car since the valve adjustment since I found out my plug wires were pretty bad. I'm about to order a maintenance kit and plug wires from pelican. Just make sure you can move the feeler guage without too much force, and that the rockers have no up and down play with the feeler guage in. Always double check yourself. Put the job off if you are sick. I had a sinus infection that didn't help matters. When I bent over my nose would stuff up more and sometimes it would run when my hands would be occupide. Okay too much info.....