The Lagano test may have revealed to Rossi that the function of the nickel micro-particles are transitory. These particles may only be required at startup just to get the LENR reaction going without producing the BANG.
But the Lagano testers ran the reactor very hot, and many if not most of the nickel particles melted. But after 32 days of operation, the reaction was gaining in effectiveness and vigor even as the nickel particles were being degraded by the high heat. This revelation may have allowed Rossi to rethink his fuel mix strategy. Rossi may have been surprised that the nickel particles showed limited transmutation. The nickel particles may only be required to setup a quantum mechanical preconditions that allows the LENR reaction to begin gradually and smoothly without a BANG. Once startup is achieved, the LENR reaction precedes as a fire would by maintaining the conditions necessary for its continuing progression. No LENR reaction has yet to be restarted. Could it be that the nickel particles can only be used once at the initial startup. And once used these particles become ineffective?