those are the better ones... This pump dosent give a constant ratio!!!
When you rev it up, and tootle along with high revs and not much throttle open, theres lots of oil.. high revs = more oil, small throttle opening = not much gas..
When ur at low revs, and wide open throttle, theres not nearly enough oil.. And when your flat out, wide open throttle, high revs, its ok.. its designed so the average rider wont oil their plugs up..
the pumps with the extra cable keep a constant ratio as it "knows" how much the throttle is opened up.. and if you want less oil, you can loosen the cable a tad.. if you want more, you can tighten it a bit..