[TR] TR3A Temp Gauge Question - can't get it out!!!

[triumph74tr6 at yahoo.com (Chad)]

Hello List Friends-
 
I'm working on a TR3A for a fellow and I need to get the
temp gauge out.  Do you have to extend the capilary tube and rotate the entire
assembly to get the bulb unscrewed from the engine?  It seems to me the bulb
should be independent of the part that screws into the engine so it could be
unscrewed, but seal against the bulb.
 
Anyhow....looking for some wisdom from
those who have BTDT.
 
My next move is to cut the capilary and send the @#$@#$
thing to Nisonger for a rebuild.
 
TIA
 
Chad in Tulsa