My nephew did his due dilgence but when he had the pellet stove delivered and set up he was miserable, said he heard it dropping the pellets, ping ping ping, fans were very loud, said it did not sound like that in the store, so he sold it bada bing. My questions, is it normal to hear the pellets dropping all the time and fans load or was this defective and he should have talked to the dealer and have it taken out and replaced with one that works correctly?