model 6300 egg turner.

[mpgo4th]

My first hatch using this lg egg turner was with 7 silkie eggs. I noticed a slight humming coming from the turner and figured it was normal. Today I set 2 dozen large fowl eggs and the turner is making a very noticeable noise. I can also feel a slight vibration on the lid of the incubator. Is this normal or is mine defective?

 

[1muttsfan]

My egg turner is almost completely silent.