I have a Korg SP-170DX. It has two keys that stick and I need to find out which keys to order from Syntaur. The bad keys are D and D flat just above middle C. I looked at the keys available from Syntaur and I’m not familiar with the terminlogy used to specify them. My best guess is the D-F-A Group (part #K84UD) along with a black notes group. Is this correct? Also, I’m assuming that keys for an SP-170 or SP-170S would work for my SP-170DX. Is this also correct?