How to do an engine assessment on my wifes 81A?

[david.skinner]

Did the compression test today - interesting results which I would like feedback on please. My procedure was; warm up, remove fuse to electric fuel pump, disconnect coil primary, cable tie throttle to wide open, remove plugs 7 cranks on each cylinder then retest wet after 5ml oil each cylinder. I include this in case I have this wrong

Results:
assuming 1 closest to front on RHS and 5 closest to front on LHS
dry wet
1 100 119
2 103, 116
3 100, 114
4 100, 110
5 80, 89
6 78, 89
7 80, 88
8 82 92

Different heads on each side so can I assume different compression ratios or can something else cause this? next steps? btw the engine runs very well now with a Skip distributor in it.