P2V+ very slight screech

[Phantom2USA]

Decided I'd get my P2V+ back up in the air after spending most of my time lately flying my P3P. I've heard / read, others experience problems after not flying a bird for a while.. just a couple weeks here.. I think I notice a very slight screech on throttle up from hovering, when real close to me..
Never a crash or hard landing.. your thoughts on what it may be?
Thanks..

 

[David Bruce Kerr]

Try balancing your props. Sometimes a vibrating props can cause strange sounds. If that doesn't work I could be a motor bearings.

 

[Phantom2USA]

Yes.. I balanced props. same...very slight..
I'll maybe try the drop of oil on bearing..

 

[ARM]

careful with the oil, its a dirt magnet...

 

[N017RW]

Bearings are sealed.

Oiling would be pointless and like ARM said just retain dirt/dust/etc.