What problems are you having with the Xim? Most issues are relatively easy to sort out once we know what's going on 
I have a g500 which was working but occasionally suffered power issues, I use it combined with a Sony nav (wired), tried plugging both into a powered USB hub. This works until the nav starts charging, at which point the mouse stops working, it's as if the charging mode switches everything off. If I leave it to fully charge and plug it all back in it works until the charge drops to the point where it starts charging and it all disconnects again.
So I thought I would try a new mouse, turns out the Corsair scimitar isn't supported (side buttons don't work), so again the nav setup can't be used. I also bought a brand new nav, that had the exact same problem with the g500 (which works fine on PC btw), then just in case the new nav came with a bad battery I bought a brand new battery which I tried in both nav controllers.... still the same issue !!
Both navs and mice work perfectly fine on my PC and so most of my gaming is on there now and xim gathers dust
Edit: forgot to add that I come back here once a month to ask when drivers for the scimitar will be added but those posts just get ignored now, that's why I've started looking for alternative device