Actually I've had good luck with slime for both leaking beads and other small slow leakers.  I've also seen what it does to aluminum wheels so I'm hesitant to use it on these. 

[2015 Z Force 800 53/Trail EPS]

You know...I love my Reapers but...I have had a couple of times when I had bead leaks that drove me crazy. And these on the stock wheels fit looser then any I have mounted in the past. One I just cleaned up with acetone and sprayed some silicone spray on, aired it to 30psi and it was good. But the other..was a another story. Had to use bead sealer on it. Did have one once that I wipped-down and lubed with slime..That also worked. 

Took it into the local tire shop.  They broke the bead down, tried bead sealer 3 times, and there's still a really slow leak.  Says the rim looks good, must be the tire.  It slowed it down quite a bit and they only charged me $5.  I guess it's Slime time.