I ended up using a grinder to put in a twin tip in the Powder plus boards. It's not a major reverse cam; has about 5mm of rise in tip and tail. The tails are not a full twin now, just partial. They kick ass, though. If you find a pair of old Powder Pluses, or comparable ski, try it. Just don't watch tv and forget they're over the stove. Slow and steady wins this race.
