Good day, I have an enquiry regarding my piano's keyboard. I stay in a high rise building (the 9th floor) and from my surronding enviroment, it is always hot. It is Singapore that i reside, its 365 days filled with summer coupled up with warm humids all year round. So here is my problem - recently my piano's keyboard felt very strange. I lost total control of the keys as it is really hard to produce a nice sound, and sometimes i can see my hands shaked by the keys itself! Any good advice or suggestions? P.S - my piano is a Hailun grand 178 model.