You're too kind Jack, I'm one who appreciates seasoned knowledge! I like trying to give back to the forum that has helped out myself, a keen back yard hack.
Regarding the the relief grind - would the main tangible benefit for the homeowner be the cleaner cut? Everything else I've known about the relief grind is that it reduces wear and has greater efficiency for the petrol motor as the cylinder contact area is absolutely minimised. Less wear, less fuel, less stress, less dollars?
