I'm in the same position as you and discovering that some spares are hard to find (and very expensive if you do). Try ebay and keeptheheaton.com. or try Google searches for a specific item (have you got the list of part numbers?). These old boilers are pretty inefficient by modern standards now (50-60% efficiency v 80-90%?), so we may have to bite the replacement bullet soon. What's wrong with yours? John
john1000
December 2007