Try the version of Manila that ruskiyab has inside his HD People tab port ... it sped up TF3D on my device significantly. (CFC version)
http://forum.ppcgeeks.com/showpost.p...9&postcount=28
As for the X button, that's a screen sensitivity issue, try boosting it and using TouchResponse for haptic feedback. Less propensity toward double-tapping things because you know the device registered the tap.