I have front brakes so my tires are a bit further out on my front spindles than normal. Im pretty sure this is what is giving me this problem and cant quite figure out how to overcome it...
Something I'm always experimenting with. Both caster and scrub radius increase steering effort, and can mask other important issues. Most drivers start with as much caster as possible, I disagree to that as being the cure-all for lack of forward bite. Rooster used to always be on my butt about the amount of scrub radius I had in my steering setups, and it finally sunk in a little. I started out on my GP with 6-1/4" positive scrub(!!), and now have it down to 2.25" positive, and that's with EC's brakes installed. For me, it takes experimenting with axle beam length, tire width and wheel backspacing. They are a pain sometimes, but the Van-K wheel halves can be your friend. As far as caster, just because "everyone else" is running 8-12° positive caster doesn't mean you have to. Now all of my mowers have as little scrub as possible. Including my FX/S.
Never be afraid to experiment. It's one basic advantage you can have over other racers. Use the fact that nobody like change to your benefit. Don't just pick one thing, bend it around a little bit, and decide it's as good as it's going to get. Because that's where top dogs of this sport win before ever showing up at the track.