I am using IGV to look at some RNA-seq alignment. In general I find this tool extremely helpful. However, when looking at some longer genes I am unable to visualize the alignment and I receive the message: "Zoom in to see alignment".  
Is there a way to change this setting to visualize the entire gene (maybe by increasing memory usage of the tool?). Does anybody know how to do this?
Go to `View > Preferences`. Then in `Alignments` tab, change the `Visibility range threshold` field.