Buy more batteries! Lol...
Have you tried a governed 2350? It holds well but doesn't waste quite so much energy flinging the blades around at high speed... If found after getting the rail R-96 tail blades that I got the same holding down to around 2200-2250 as compared to 2350 on the stock blades.
I suggest giving it a go - try 2350 governed with the stock blades and if that works for you, perhaps try the r-96 and dropping it to 2250-2300.
I've seen several reports of poor meshing when you change the gear ratio. It would be nice if KDE or someone came out with a kit designed for it.