pos on carb?

last i checked POS meant "piece of sh*t" hahahaaaa
which would obviously mean the "tors" on top of the carb
 
if this is a stock carb, on a stock, or nearly stock motor internally, the stock, middle clip position will be fine, rarely does the needle POSition need moved for a pipe, usually just the main jet

the needle in the middle of the carb slide has clip POSitions, and can be moved up and down to richen or lean the 1/4 to 3/4 throttle positons