Take a company that does not mind fudging the numbers on the W&B for profit and pilots with balls larger than brains and this is what you get.
You mean like this?
ASN Aircraft accident Antonov 32B RA-26222 Kinshasa-N'Dolo Airport (NLO)
Or was it just a case of several different people taking a little to allow extra luggage or cargo on board without knowing who else had done the same.
In my time as a regular SLF in that continent often a $10 was all that was needed for the excess baggage not to be noticed.