I built some 38mm reloads to use winter of 2004, but never got to fly. The motors have been assembled ever since. I plan to fly soon, so willthese motors now be hard to ignite? Should I disassemble them, scrape the propellant cores, and reassemble? Or just leave them as is? They are AT Blue Thunder reloads - I357T & I435T. Larry Lobdell Jr.