OH... I just noticed... You've got a first Generation Estes Porta Pad E...
Built prior to my complaint about the pads melting and the poor engineering of it.
My pad was used to launch 3 rockets in total, and I had a melted spot on one of the legs because the plate was sitting directly on them and the flame from an engine happened to be directly over it too... Another issue was that the swivel unit was mounted above the pad. Exposing it to the flames directly.
They ultimately reinforced the legs by adding a plate underneath them, and then they put stand-offs to keep the plate from sitting directly on the legs, and the instructions had the swivel mounted under the plate to prevent it from getting torched.
If yours isn't badly damaged yet, you might want to just add some wooden blocks to the tops of the legs, and move the swivel down below the blast plate.
Below are the instructions for the version that corrected these issues.
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