1. TV cable should be 100% pulled out at max throttle, controls operating pressure as well as shift patttern. Very important to have it right.
2. With the 4.30 gear the governor is turning alot faster at a lower speed than it was designed for with a low to mid 3's ratios. You'll want the lightest weights you can find and springs that will keep the valve from being pushed in too soon.
Take the Garage tour: http://www.youtube.com/watch?v=cZIhuocG2ig