Hi Andrew,

As I said, I don't have read the instructions of the JDE kit. Using a hausl300 pump it is posible to run the MW54 with only 2 cells, we use 3 for the KJ66.

I don't think posible that with 6V you use the 25% of pump power to go to 160K and with 4,8V you only arrives at 145K at 100% power. MAthematics fail here.

In any case, if the pump is a Hausl 280 (plastic rear cover), you can use 6V without bypass. But I think that better use 4,8V.

Gaspar