The middle block surrounds an unclued entry. 6, 3 on the same line and 3, 6 on another.
Peculiar - definition is the first and third letters. The “a” is in English but the city name is in a foreign language.
Rubbish - I thought this one of the weaker clues. Replace an M with an O but the US gang member is a bit of a stretch.
The last word of the phrase is not technical.
When you get to the end there is a trap for the unwary in one of the unclued entries. Be careful with the unches.