Help please! removing temp sensor

["Alberto Manganini" <albertom@tin.it>]

I have to remove urgently the water-temp gauge in my 1965 MGB, but the bolt
that keeps the sender in its seat is so stiff I've tried for hours, with
lots of WD40, but it didn't move. My problem is that the bolt itself is
beginning rounding!
Any suggestion? (I've also tried to run the engine to warm it, but it was
useless)
...I should give the dashboard to the painter in dec.,10!
Thanks in advance

Alberto Manganini
albertom@tin.it