What size bolts for a Truvativ Rockguard

[MTBCanuck]

Having trouble fitting a Truvativ rockguard on my Truvativ isoflow crankset. Dropped the big ring from the guard and the guard is too thick to allow fittment with the original boltset and not deep enough for fittment with the longer bolt kit I've used with adding bashes to shimano cranksets (all my other bikes). Anyone know what length bolts I need? Again, trying to run a bash with the middle and small rings on an isoflow crankset. Thanks!

[Slash5]

None of the local LBS carry anything but double chainring bolts around here. I just shorten the nuts with a belt sander. Don't even have to do a great job of it since they locate on the flange anyways.

[TBarnaby]

I'm wondering if this will be the only way to make it work... Universal Cycles -- Truvativ Rock Guard Bolt Kit