thanks ldh. i guess i just dont plain understand my experience then. both powers i had on both 919's when i bought them were used and scrubbed in well. they did ok on dry surfaces, but the second the rain hit, forget it. my butt was puckered the entire time. as soon as i switched to road 2's i could tell there was a huge difference in traction. so i'm not sure what went wrong in my experiences.
if it was just one set i could assume it was a fluke, but 2 sets, on 2 different 919's, no way. so i dont know.