thats strange. what i had done was google KG to OZ conversion. thats where i got the 1kg=35oz. i did think that a 200oz stock servo was kind high. most RTR's have servos in the 90-150oz range. dont know why the conversion i found doesnt work out, but it is more likely that the stock servo is 90oz, rather than 200oz. thanx for posting that link.