Today I did all 4 motors test run and after couple mins in the medium throttle run, #4 engine motor started making sticking sounds followed by racketing sounds and then it seized itself! while other 3 continued to run normally....
So now I'll have to get another motor for it, plus already got new Eflite 60A ESC's for it. Next step it to get landing gear air lines all hooked up and cycle it few times to make sure they work properly and air dosen't leak through the lines.....