I did not fly it because I am not that expert to fly it. I liked it at first sight and ordered it the same day. Now after going through all things, I have decided not to fly it now. I didnt build the complete jet. It was already built 90 percent. I just completed the things... But that too under expert guidance. There is as such no problem with jet and thats guaranteed. As far as the upgradation is concerned, Yes, the battery can be upgraded but not the motor because bigger motor will create un-stability. For rest of the information, you can call me on my cell number or you can give me yours. 0332-6969696
Regards,
Tashkeel
