Not to mention Futaba reciever problems.I loved my 3pk & wanted a 4pk till every one had reciever problems & all the futaba pros said they took the 2.4modules out of their 3pk & put in fm modules for racing due to the reciever problems & none wanted to use 4pk till it was fixed,only futaba says their is no problem.So when futaba proves they fix it I'll be in line to get one,or they figure out how to put a spektrum module in the 4pk I'll be first in line. Till then I float between my dx3r,3pk,& react.But I will never use my m8 again.