coomarlin,
A filter between filler and tank would just catch dirt when you fuel up, then dump it in the engine when running it. A filter should be the last thing the fuel encounters before reaching the engine, so between filler and engine is the correct place. Also run a filter on your filler hose from your fuel storage container.
I ran my antenna through a hole on top of fuse, right behind canopy, down the top of fuse, to the root of the vertical stab.
DKjens