My car produced similar compression results. I plan to tear the whole thing down and rebuild, and I don't know why the numbers were low. But similar setup - weber side drafts, plugs out, warm engine, runs fine despite compression numbers. I fantasized that my gauge is bad - and maybe that is the case. My results 1 through 6:
123, 126, 129, 138, 124, 129
Good luck with the PPI!
123, 126, 129, 138, 124, 129
Good luck with the PPI!