heights

I'm preparing to do my muscle jet kit and I wanted a good base line. I've been checking over everything and I decided to check float levels. 2 were right on at 17 mm. One was above the 15mm mark and one was a considerably below the 17mm mark. Quite a bit off. The plugs were not showing horribly...

http://www.dailymail.co.uk/news/worldnews/article-1081779/School-drop-The-children-walk-class-day-5-000ft-cliff-ledge.html