I bought a vacuum bottle to make changing oil in a bluebird Power rake a little less messy but I pumped forever and only got a cup out. So I had to take the front plug out and lean it forward, trying to get as much in a oil pan as possible... 1. Is there a good way to change oil in a Bluebird Power Rake? (it's fricken ******** the way it is as I understand) 2. Could my problem have been the oil not hot enough? Are hand vacuum bottles just a gimmick?