I think he is probably talking about a furdown unit probaby a bad limit or bad heat strip or sequencer there known for those three problems at least here in texas.
Experience is a hard teacher because she gives the test first, the lesson afterwards". -Vernon Law-
"Never let success go to your head, and never let failure go to your heart". - Unknown
"To face tragedy is the greatest challenge; to overcome tragedy is the greatest success" -Ranal Currie-