Flow rate

I tried printing a single walled calibration cylinder I grabbed off Thingiverse to try and calibrate flow rate, the first print (left) came out alright except for a couple holes where a new layer starts, and is about .6mm thicker than it should be.  After bringing the extrusion multiple down to .712 and printing it again (left) it looks horrible and is covered in holes.  I think that's because of the print head moving too fast, I'm not really sure.  On the bright side the area that doesn't have tons of holes is .43mm thick.  Anyway, I'm not sure what to do from here, help would be very appreciated.