On Oct 12, 9:03*pm, wrote:

* * * * We've put new points and condensers in both, including internally (and
of course externally) timing them. *No change. *I've done full-power mag checks
and misfires would be apparent in that case. *New plugs make no change, either.

Advance the static spark timing on both mags by a degree or two more
than where it's sitting at now (e.g. 26 or 27 deg BTC instead of 25
deg) and see if that makes a noticeable improvement on static RPM and
takeoff power.