Basic tuning instructions for 8-note mini kalimba!

My mini kalimba doesn't really have enough room in the back to use a regular kalimba hammer to tune. Possibly if I had a small pointed one it might work. So I used a standard file that had a flat point that worked nicely to fit in the tight spot.
If the pitch is too high, tap the key from the back.
If the pitch is too low, tap the key from the front.
I use the C (chromatic setting) on a guitar ukulele violin bass clip-on tuner.