Running into inconsistencies in my simulator

I'll second SamHill's suggestion: checking the usage count for variables can help you spot problems.

Also, you can click the Use Count number to open details.

Here's another suggestion for troubleshooting: add temporary text boxes and insert references to the variables used on a given slide. That helps you check whether variables are being adjusted as expected. 

BTW, I also agree with Sam that files should be simplified when one is asking for help in the community. Here's my boilerplate guide to best practices for uploading a .story file:

• Only include slides that are related to the problem.
• Be sure objects, layers, motion paths, and variables have meaningful names.
• If there is proprietary content, replace or delete it. For example, replace proprietary text with “ipsum lorem” text.
• Be sure to clearly describe the following in the file and/or in the post with the attachment (if you haven’t already done so): what you want to happen, what is not happening that should happen, what is happening that should not happen, and what you have already tried