So you cut off the little nub and then drilled into the square post and screwed in the proline screws and used the caps? I did that on my ET also but I looked at my friends SCT410 posts since they are the same as the MT (because I don't have my MT kit yet... hopefully it will be here today) and the post is smaller so I wasn't sure if it had enough material to drill into and put the screw in. But if that's what you did I will probably try that.