[British-cars] [TR] Ignition rotors

[Randall]

>  I  reasoned that this could cause an iffy ground that would 
> cause the intermittent ignition.

Definitely.

Don't forget that that ground wire is a special extra-flexible wire; since
it's forced to flex every time the vacuum advance moves.  Ordinary stranded
wire will eventually break from the flexing; plus interfere to some extent
with the vacuum advance.

Randall