So I'm threaping along minding my own business and look down to be met with this - ...... which obviously fills me with joy.  How does a speedo needle snap?  Well, I guess fatigue from age, plastic don't last forever. So it needs mending.  You can see the rest of the needle just at the bottom of the gauge but I suspect trying to glue it will not be successful.  My questions are, does the speedo surround which retains the glass front just pull off (with a bit pf gentle persuasion)