That all sounds great Alan, you are well on your way now :-).
Glad we got it resolved eventually. Was a puzzler for a while there!
In my experience each extra reactor will slow down things a little bit but there is a sweet spot, for example adding a second might mean that each reactor generates 1000 a minute which means combined you are getting 2000 a minute, a third might reduce this the each getting 800 a minute which is still 2400 combined so an over all improvement but then suddenly a 4th might slow it down more considerably to only getting 500 a minute and then thats 2000 combined and so the sweet spot is 3 reactors.