The HF does turn like a truck. No ackermann plate in the world will fix it, unless you can find one which is wider by about 5mm on each side. At full throw, compare the front wheels to any other truggy. The inside wheel turns too much. The fix is to eliminate the excessive ackermann action. Use longer tie rods and relocate the attachment point farther out by about 5mm or so. Been a long time since my conversion, but it's proved to be cheap, simple and effective.