This is good news

Tab Mix Plus have been lightening quick

Now the two icons in the tab bars sit next to each other fine.

This is the Version with the Fix

http://tmp.garyr.net/tab_mix_plus-dev-build.xpi

This is the Version Number

Tab Mix Plus 0.3.7.4pre.090107

This is the result

No more big tabs

Maybe Fast Dial Tab Bar back soon :-)

relevant links

here

Thanks oneman of Tab Mix Plus
That was a quick fix
Most grateful

And thanks to hirsute for kindly approaching Tab Mix Plus in the first place !!