RS stators are notorious for being shit, but i dont wanna write that off straight away, you should test the stator by checking the resistance. find the stator plugs and disconnect it, look for the green and red wire (charging side) and ohms test them with a multi meter, should be 13.7-20.5 ohms. and check the white/red and white/green wire (thats the pickup ) and should be between 94-140 ohms.
to test the coil, pull both leads off the plugs and both wires off the coil, and with a muti meter, test the two spade terminals on the coil (primary), should be .28-.38 ohms . and to test coil secondary, put one tester lead on a coil spade terminal and the other on the spark plug lead parallel to it, (check both sides) should be 4,700-7-1000 ohms. if the secondary doesnt work, pull the plug caps off the leads and try again. if you want to test your plugs caps, unscrew them from the coil leads and test both ends of the cap, should be no more than 5k ohms.
i doubt your bike is making equal hp than tq, so if your bud with a dyno swears by that, hes wrong and prolly doesnt have a dyno, and god knows whats in your bike.
what jets are in the carbs ? and what needles/clip position ?.
do you know any one with a spare good stator or cdi ?
have you inspected the reeds ?
done leak down test ?