Can anyone tell me why the top 4 slots on my SLI-M are set as momentary buttons and the bottom 4 are single action? If I have a button plugged into the top single slot and press it it highlights 15, but as soon as I let go of the button it highlights 16. Only happens on the top four slots. Bottom four slots if I press the button it only shows 1 and nothing when I let it go (which is what I want). I can work my way around it if I need to, but it did not do this before i took my wheel apart for some maintenance. Thanks.