If it is marginal with the DA50 then would the MVVS 58 be a better choice?? It is slightly heavier but has alot more power. I was planning on using dual RX batteries for a redundant power system. I have been using Nicads and Nimh batteries in the past, however maybe it is time to step-up to lipo's. Would the weight with lipo's and regs be ok for te DA50?? I also will be using a slimline pitts muffler...