To address the POW rewards dropping so low I have pushed an update to the repo @ - https://github.com/bitgrowchain/bitgrow/tree/basepow

and the code change is here

https://github.com/bitgrowchain/bitgrow/blob/basepow/src/main.cpp#L926-L928

This has been merged to master.  Please update before the hard fork at block#56555