I went to Menards after work and found this Hitachi flex attachment for my Makita. It works very good for what I needed. The collet is only about 1/2" diameter so it got nicely into the corner, maybe a little over 1/4 from the corner. It was only $11.99. This one wouldn't quite make a 90 degree turn but that was ok for my task today.
Thanks Sean!
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