they are eligible for the warranty replacement program. they pay labor and shipping and they get a brand new lennox g51mp
be sure it lost the 4 psi in the 10 minute test. lennox wants every failed pulse back now so they can conduct their own test and only if it fails for them will they issue you a credit on your account for the g51 you purchase.
keep in mind the rubber test plugs do leak even if you soap them and cant see any bubbles.
my back has been so much better since lennox stopped making replacement heat exchangers for the pulse...that was hard work.