Trigger Broken on Black&Decker GH600 Grass Trimmer?

Trigger Broken on Black&Decker GH600 Grass Trimmer
The bit of plastic on the trigger that flips the on/off switch has broken away and the trigger no longer touches the switch. It's a $2.00 part that you can't get anywhere unless you part with $6.00 for S&H. Any ideas on how to mend what I've got? So far in life I have failed miserably when trying to alter or mend plastic parts.
Thanks much.