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@optimuspig
I’m seriously considering promoting up a fourth TF now. At L53 in the Spark Run, I can usually complete the run, but can not earn enough points to max out the sparks reward.
So far I have EGL and GSGL at +140% each and UM at +90%.
Should I continue promoting UM, or should I spend the 1,000 gems (I have over 20,000 available) to open up slot #4 in the Spark Run and begin promoting another TF?
And if so, which one? Dead End seems to be a popular choice, although Sideswipe seems quite powerful as well.