I audited 443 GGUF quants across 25 repos. 64 of them can't be the quant their filename claims.
TL;DR: k-quants need tensor rows divisible by 256. When they aren't, llama-quantize quietly swaps in a ~4.5 bpw type and the file keeps its low-bit name. I audited 443 quants across 25 repos; 64 are a