[SLESTAK75]

After doing a bit of sprocket and chain research it seems to me that the 520 sprocket would be thinner than the 530 chain and the chain would have side to side play. I thought of it like 10 speed too. I figured having a 13t to switch out with my 16t would be for areas where hill climbing and short bursts of speed were required and then use the 16t in areas where speed and WOT was in order. My buggy had a 530 chain on it (took it to local cycle shop and asked) but Im thinking the sprockets are not 530 because the chain has lots of side to side play. I think ill wait till I can get all sprockets and chain new so I know what I have will match. Its not like a cheap Chinese buggy would ever have mismatched parts.....Right??
Thanks for the replies.