Close to installing - still waiting for antenna to arrive. Am I missing some hardwAre at the top of the radio that would secure the radio at the top to the dash, after the switch/volume and tuner projections are pushed through. Knobs alone sure won’t hold it. Also,how do you preset stations? I have pushed, pulled and pressed up and down on the preset buttons with no luck. Anyway here’s what I’m starting with to install at the top. Anything missing?