The sleeve has a chrome coating & by honing or lapping you are removing it. A hone for automotive purposes is to remove the glaze from a bore, be it engine block, wheel cylinder etc. On a nitro engine the glaze (chrome) is our friend. The dude who lapped the sleeve with toothpaste, good luck with your engine but I think you may have decreased the life of it. If it runs hard now & you are happy with it I guess thats all that matters.