That is good news Brucepick,
A bad valve seal will really chew up your oil and lose compression. It sounds like you have a good shop you are working with many mechanics don't go through the trouble to scope. you can do the straw test but i think you have already found your answer.
have the head rebuilt new valves, seals, springs and valve guides whatever the shop thinks you need. It well cost a few bucks but you will have a nice running motor again with all new gaskets to boot.
Best of luck in getting her running again, It is sweet driving a car after it is properly fixed you feel all that you originally liked about it.
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2012 Chevrolet Traverse *active*
2002 Oldsmobile Alero GLS *active*
2002 S10 2wd p/u 139,000mi. *active*
1975 Corvette Stingray *active*
1994 Camaro Z28 Convertible 149k *Sold 2013*
1998 Blazer ZR2 189k *Sold 2012*
1995 Tahoe LT 250k *Sold 2011*
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