Compression readings

[Adrian Jones <AdrianJones@compuserve.com>]

Hi All,
These reading are from my 1275 MG Midget (#1 back-up to my TR3A - of
cracked head fame).
Stone cold engine.
155, 130, 155, 150.
With exactly one teaspoon of engine oil added:
170, 142, 170, 160.

Would the low #2 explain an engine miss?
Would a cylinder head overhaul be beneficial or a waste of time?
(After the TR3 experience,  I think I could pull the head off this before
breakfast and still have time to read the newspaper).

Many thanks for some advice,  Adrian