TR6 backfire

[Gernot Vonhoegen <gernot.vonhoegen@stir.ac.uk>]

Quick question, the TR has a slight backfire on overrun. I checked the
points gap and static timing should be ok. There is a couple of
disconnected vacuum lines (except the one for the advance) but they are
properly blocked off. 74 emmision control california car twin stromberg,
no emission stuff left.

Thanks for your opinions, Gernot