First of all thanks for the comments but some of you may not understand the situation here. I took these heads in several months ago and asked the guy to check them out since they had been in the cars trunk for nearly 20 years. I told him to replace the valve seals and check that the valves are functioning properly and let me know what needed to be done in order for the heads to do their job properly. After he had them for about a week he called and told me 2 exhaust valves were not sealing properly and needed to be replaced. He was also going to resurface the heads and give them a bath. Nothing else was mentioned as needing to be done. Now the average person would think that after getting these heads back they were ready to use. I would not have installed them had I thought otherwise. You folks that are serious re builders or machine shop owners of course may be much more intelligent than me but I would think that part of the job of checking these heads out is examining the valve guide clearance and letting me know if replacing the guides is needed. Why would I specifically need to request that to be checked? This should be part of the inspection process in my opinion. I would have paid to get it done at the first visit and not had to break my engine down and take them in a second time wasting my time and spending more money on fresh gaskets and fluids. The place is called Competition Racing Engines or CRE on South Monroe in Tallahassee, Florida by the way.One of the last things this guy said to me as I was leaving is that he needs to get out of this business which I don't think is the best statement to make to a customer disgruntled or not.