I have a problem with this keyboard. One key gets itself lifted to maybe 45 degrees above the rest of the keys. Seems like it's a spring problem under the hood. Deceased owner used tape to hold this key to the level of rest of keys and he was playing it with a band regularly, right up until he went into hospital for surgery where he became sick and died around Christmas of 2023. He had about 12 keyboards set up in his basement but only took this one to gigs.