Replying to G3 Ion brake width question

I just ordered a pair of voile V6s and a G3 ion. The voiles are 100 in the waist and the ions have the 115 brake. I am now concerned that the brake will be too wide for my ski. If swapping for the size 100 isn’t too difficult I’ll do it. Problem is, I got the ions off ebay so while they won’t be impossible to exchange, it will be more difficult or costly than normal. Can anybody tell me if I’m going to be ok or not with this brake? This will be my first time owning a touring setup so I don’t want to fuck it up but if its not a huge deal I won’t worry about it. Thanks for the help