Bought a new P2000sk and ordered the aluminum +2 pinky extender from HK Parts. It's very well made but I simply cannot get that thing on the mag. They didn't include a hex with the package but I had one that fit to sink the set screw- but the back end of that extension sticks out to make it impossible to depress the mag plate enough to slide the extension on. Anyone have one of these and can offer advice? I've put on hundreds of various floorplates and have NEVER had anything like this happen. Can't believe I'm the only idiot with this issue?? Here is a pic. That back side part of the base doesn't allow you to simply hold down the plate & spring with your thumb.