tekno neu have a suspect clak clak when spinning

[patxeik]

hi guys, i have a tekno neu 2200kv barely new (it has like 10 5000mah 4s lipo) and when I take the neu from the tekno revo to install into my new mugen tekno, i noticed that when i spin the shaft with my hand sounds like a clak clak clak inside. The was running good since last time i ride it on my revo, but i wanna know if i must dissasemble the neu to check if something is break or i will void the guarantee. The neu is like three months old.
Will you dissasemble to look if have some bearing broke or something?
I never dissasembled any neu, but im not afraid about do it, i just wanna know if you will do and some tips about rebuilding nad taking care of it.
thanks for all