not really sure why the fence is wobbly - maybe someone with a Hitachi can help you with that, although I've heard good things about this saw - never any complaints about the fence.
if all else fails - you can always get the Delta T2 fence (lowes carries it) for $120-$180… depending on sales/etc. which is a VERY good fence. you may need to drill some holes and modify the new fence/your saw to fit them both together though.
if all else fails - you can always get the Delta T2 fence (lowes carries it) for $120-$180… depending on sales/etc. which is a VERY good fence. you may need to drill some holes and modify the new fence/your saw to fit them both together though.