Hi NGT, many thanks for your replies. I managed to merge water stream and exhaust smoke with various other mods so I may have a go with NYGM as well. I will also spend some time looking at OLC2 to see if I can integrate that.
Its a shame more modders don't consider porting their work to NYGM as its obviously very popular. oh well, each to their own I suppose.
At the end of the day, I'm just gratefull NYGM still has the support and backing from some really talented individuals.