i just got myself a used rm1x and im having some frustrations. theres no stores around for me to test this machine out in so i kind of went into buying it blind. the keys are mushy and sometimes unrespionsive feeling. they dont trigger the patterns or tracks exactly when i hit them and i have to press deliberately and almost forcefully for them to respond. should this be happening? ive never played around on a yamaha before. i dont mind it too much, im getting a midi controller soon and thatll replace ever having to use the keys on the rm1x to play with but can i assign the keys on my keyboard to control the patterns and tracks on the rm1x? i would hate to be playing live and bungle a beat because of mashy keys.