Directly out of the box I noticed a groove in the roof running the entire length. I first thought the integrity was compromised but after looking closely, it does not appear to extend into the roof itself so maybe it has something to do with the mold used during production? Some buyers may be concerned with the appearance believing it to be a faulty product, but the birds surely don't care as cardinals, sparrows, and red-winged blackbirds have so far visited the feeder. I wish the hanger was not so long which would make it easier to place a dome over it for rain protection. A shorter hanger would not impede filling or cleaning as it is a fly-thru feeder. I haven't seen where there may be any issue cleaning the platform grid even with white millet being offered. I am now using only nutrasaff to deter squirrel feeding.