I have a Vigilant that I bought new in 1981. I have used it to heat my entire home (1,500 sf) as a primary heat source. I have replaced the ash fettle 3 times in that span of years and find myself in need of doing it again. The problem I am running up against is that the part (130-4023) is becoming very hard to locate. Are there any members out there that can offer some help in locating this item? Much appreciated.