One of my piano keys has become sticky (the lowest F#). It stays down after I've pressed it and only comes back up very slowly.
One of the other keys now "sings" when I press it sharply (the B, 2ve below middle C). I've tried moving things off the top of the piano to see if it was any of those causing a problem but it isn't.
The piano was only serviced at the beginning of October. I suppose I'll have to get the piano tuner back, but can anyone throw any light on why these problems might have arisen after only 3-4 months? It's a Kawai, 6 years old.