I ride a Custom X. If there was ever a board you'd be afraid of catching an edge on and getting slammed, that would be the one. Hasen't happened to me once, not because I detuned my edges, but because I know how to ride. Don't detune your board, you'll ruin it and waste your money. If you're so afraid of catching an edge, I don't think it's a board maintenance issue, I think you need to take a lesson and tighten up your riding.
'12 Lib Tech T.rice / '12 Burton Cartels
'10 CustomX / '10 Co2 EST