The less annoying and higher performance method (the backplate is in the better orientation) is to use some 6-32x2" screws to hold it in place though.
Hm, I don't seem to have any #6-32s on hand. I guess it'll be another day until I'm up and hashing.
Thanks.
8-32s should also (barely) fit, and 4-40s would also work though you might need washers.