I checked my belt tension yesterday with a Crikit II and came up with a reading of 100#. This seemed low to me based on the spec in the e-manual (750 ± 250 newtons). These numbers translate to 169 ± 56 pounds, up in the area where a lot of you say you are running.
Today I looked at the service bulletin, and there the numbers are 450 ± 150 newtons, or 101 ± 34 pounds... which would put me in the ballpark.