[sparkydp]

A schematic or link to the part might help, but I think what you want to do is set your solenoid #1 output on if button 8 is pressed, #2 output on if 9 is pressed, and set both to off when neither is pressed. What is probably happening now, is you're not clearing the output in the neither pressed case, so it just remembers the last setting it had (and keeps extending or retracting)