I have a 471 Hemi with alum heads and a hydraulic cam. I have been hearing what sounds like a lifter or valve train tick back in the #5 or 7 cylinder area. I just did a compression test and came up with this:

#1 - 190 : 190 - #2
#3 - 190 : 190 - #4
#5 - 190 : 195 - #6
#7 - 175 : 185 - #8

So I pulled the driver side valve cover, major PITA with power brakes

Nothing looks terribly loose or out of wack. You can push down slightly on the lifter to cause it to be loose but I am guessing that is just the hydraulic part. I have messed with hydraulic in a long time as my other motor is solid roller, way easier to adjust. Always seems like I am guessing on hydraulic, any tips.

Plugs are also looking rich, but strangely the #7 that is low on compression is one of the better looking plugs.