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I am using tramo to calculate seasonal factors because of several negative values in the monthly data series. Tramo provides negative and positive values in its calculated seasonal factors series. How can I normalize the seasonal factors to all positive values?

Eviews 9 does not implement area band graphs properly. I have a series of area band graph created in Eviews 8. There are 3 area bands in each graph plus one single series. Eviews 9 does not show the single series. Is this a bug or do I need to setup these graphs differently in Eviews 9?

I have a time series forecasting model in SAS which is run using a maximum likelihood estimation method. Other methods include unconditional least squares and conditional least squares. How can I duplicate the model in Eviews using a maximum likelihood estimation method?