Air vs Ride

Sorry for the jong question but i am some what new to twin tip skis. I picked up a pair of Nordica Superchargers at a local swap and they are "Air" mounted. First question. Is there a difference to "Air" and "Ride" besides the obvious that ride is mounted further back? second, can this ski be drilled for a second time or is it going to compromise the structure of the ski?

Heres a pic of the skis: http://www.ski-depot.com/miva/mercha...roduct_Count=2

There are no JONG questions...only JONGS who post them in the wrong forum. TECH TALK BITCH