Cant recognize the top photo / part. But that’s a bit rough.
roofs….hard to say….dont know if its old and was exposed to heat or temp humdity , (handled a bit??) that may have caused that. Or, brand new and a qc issue.
fwiw, i have many pola, some new, some from the mid 80s forward,several ancient nos, including the freight shed (with early paper signage, and one from about 2000). None look like that. But, some roofs do have anomalies…odd tiles
but, as mentioned…old molds? Odd patch of paint.?
that would not be an issue for me. As mentioned, a wash with some meths diluted india ink will hide all. Or, live with it. Depends on the inconvenience and time involved.
fwiw, the old pola was suberb about sending replacement parts…
simply circle the parts needed on the assembly diagram. i did this a few times with sun warped roofs and engine shed hinges, as well as a wonky turntable circuit board.
Dont know about faller. Nothing is as it once was……