[Elecraft] KX3 2m module, SMA connector to big for cutout

[K7KY]

I'm installing the 2m module in my KX3, but the SMA connector will not 
pass through the case cutout.  I've scraped paint off the hole rim, but 
it's still no-go.  Either the hole is too small or the connector a bit 
too big. I can't just enlarge the hole without getting metal dust inside 
or dismantling the radio. Has anyone encountered this issue when 
installing the 2m module?
Thanks, Doug K7KY