Briggs 5hp flathead won't run long

[Tpdingo]

That is a RAPTOR II motor. It is not the same as the similar FUNPOWER and I/C line up. Search for a RAPTOR II carburetor and see if the results are better.
Does this look right, although price does not! https://www.ebay.com/i/132707164645?chn=ps

 

[Memfus_boi]

Thats it! I've been searching all day. I hope I can find it on Amazon so I can get 2 day shipping!