I'm troubleshooting an M Audio SP-2 that I got second-hand, and that looks to have been modded by someone else. (Its cable has been replaced. I'm not sure if anything else has changed.)
It has a quirk: depending on the polarity setting, the sustain activates very "early," when the pedal is only pressed down ~10% of the way. I would have expected it to activate when it's closer to ~90% pressed down.
Before I look too far into "fixing" this, I'm just looking for some confirmation that this is, in fact, a wrong way for a sustain pedal to behave? It certainly feels weird to me, but maybe it's a matter of opinion?


