Has anyone had to install the vhf antenna thru the cabin top? I am going to be doing this on wed. night, I cannot get the wire thru the hole in the cabin top where all the wires for the mast come up...so it looks like I will be drilling. Whould one location be better than another, i noticed that inside there seems to be a space around were the head liner is, is it hollow? or should i bypass it and put the vhf a little more forward of the headliner? ANY helpful thoughts would be great!!!