As a service tech in the Hartford,CT area with 30 years experience, I can give you my opinion of cast iron burnham boilers. The problem with leaking sections is mostly with the v7 series and some with the v8 series. If you have an older burnham v1 series (1980's) it will probably last forever as this was before the problem with bad castings (early 1990's to present). It is unfortunate that some homeowners have had to replace the boiler block one, two and yes, three times. If you have a leaking burnham v7 or v8 boiler, I would not bother to try to deal with Burnham, I would install either a Peerless or Buderus cast iron boiler. The probability of either of these boilers leaking is next to zero, and if there were an issue the manufacturer would stand behind the product. When Burnham bought American Standard many years ago, their product was much more durable than what they put out in the early nineties. It is unfortunate for Burham and even more so for the unlucky consumers stuck with an inferior product with a warranty that's useless and unfair. I would like to see what comes of Burnham's newest line such as the mpo in ten years or so, hopefully not a repetition of the v7 or V8's casting problems.