Well, i tried putting them in the bore so i could then get the correct gap. The rings would not fit the bores at all and would need 7mm filing off every ring. That was the amount i had overlapping. Going to re-use the Harris rings as they are only 5000 miles use. The 750 kit has covered about 25,000 miles on standard bore and not showing any wear.
cleaned it all uyp and now re-assembling. Nice shiny black cylinders and cleaned out carbs.