Hi,
you should use QtFuzzyLite to help you with this kind of issues.
The term Limit and Perfect are not triangles but Ramps. Check in QtFuzzyLite the difference between Triangle and Ramp. Basically, Ramp yields a membership of 1.0 after the limits it is defined, whereas a Triangle does not.
InputVariable: Availability
enabled: true
range: 85.000 100.000
term: Limit Ramp 95.000 90.000
term: Very_Low Triangle 90.000 95.000 98.000
term: Low Triangle 95.000 98.000 99.000
term: Average Triangle 98.000 99.000 99.900
term: High Triangle 99.000 99.900 100.000
term: Perfect Ramp 99.900 100.000