It is for sure a beautiful specimen! A Mushy button could be allot of things from a little DNA getting inside to something mechanical. Good idea to get it to a jeweler and let it get a good look over and cleaning. I bet something isn't right about the way the install went switching things around and probably fixable but if not you sure want to know now than the later! Hope that comes out in the positive for ya man! Great score on a unique piece! Gonna get some serious attention for sure!The bottom right hand button is a little mushy vs click like the rest. I was able to reset once. I may take to my jeweler everything else is flawless. Worst case I can send it back to Oakley and have them lose it and sell it on eBay. Lol.