Option 5 - Buy a BLDC driver only from Skyfire and replace the one on the Mikini. That's what I did. Unfortunately I haven't installed it yet, so I can't report if it works or not. For now, keep your RPM's at 80% of max or more and you should be fine. If you want to mill steel that can be a problem, but for aluminum, wood, plastic it works fine (the dips in power at that speed don't affect much).