Duh - Problem with new Suburban furnace not Atwood

Similar problem with new Suburban furnace, except I could hear the igniter trying its best. After months of repair efforts, one tech finally said too much air being blown over igniter, overwhelming the propane and thus nothing to ignite. He somehow restricted the air flow at ignition, now lights every time. Not sure this is the best situation long-term, so am still arguing with Suburban.