I contacted Ecotech and they were very helpful in getting me the correct replacement parts. Through this whole ordeal, I've realized that it was a good decision to keep two MP10s. If not for the added flow for my sps, having two MP10s gives me some wiggle room in case one of them goes bad, as it did...
In other news... I decided to return my Apex Gold, now Classic after the whole ordeal with Neptune trying to dump an older product without informing consumers. As someone new to aquarium controllers, the experience was enough for me to distrust their customer service. Now my tank will be controlled via Profilux. I just placed the order through their USA distribution site. Can't wait to get it in!