Edelbrock Cylinder Head Quality

have used 3 sets OOTB, I took one set apart...wow...the valve guide were tighter then ****....I removed the valve seal...wow...those guides are very smooth....
Yeah we found that too...really tight seals but not an issue per se. But we did detect 4 tight guides once we pulled the stems below the seals, and the machine shop ID'd some burrs left in those those guides. That is something I have never found in any replaced guide and would not like to have at a new start up.