I was extra lucky with this piece too, because there were bad fixes on two drawers! I finished this one and the other one was bouncing in place in line to make sure it got its turn. I got to repeat the whole process. My goodness.
At any rate, I think the first fixer had the right intention, but they provided more mayhem than remedy. Its all good now. The sore pricklies in my fingertips have subsided, and my splintered nail stubs will grow back. Best of all, the drawers made a wonderful recovery and are back in full sliding action.