Leads burnt out closeup. The Resistivity of 316L wires is very high...the wires seem to be acting as a resistor...reduced lengths of these wire leads reduced the resistance and rectified this problem of heating up...you can see this in the next vids.
Pl check the following links for replication info about this WFC:
(For the circuit use the pg.25 schematic but with individual ferrite core rods straight wound for the Inductors rather than a single rod and bifilar wound--not recommended)
For Downloads of Water Fuel Cell Files:
Dave Lawton Approved Shop for components & kits of WFC: