I bought a Ibanez rg370dx and want to change my string gauge from .09 to .010 but i have heard this will put extra force on the knife edge of my edge III. will this have a major effect on how fast the knife will ware out. and can the knife's be replaced on a edge III?
Of course the extra pressure will make it wear faster. But the way you use your whammy bar has much more impact than that.

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Well... While I don't have much experience with an Edge III trem, I've never heard of anything called a 'knife's edge' on any trem. Maybe I'm just unaware.

If you do want to change the string gauge, you'll have to adjust the springs (tension) in the back of the guitar to compensate for it.
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