Ugh - I don't even have an opinion, which is strange for me.
I can't believe the original owner beat the transmission up ant it took 7K for you to see it.The fact that at least some of the symptoms go away at stock seem to point in part to the Gryphon.
Hope Bill comes on with an answer and that it's a simple fix!
- Jack
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2024 F150 Platinum SCrew 3.5L PowerBoost FX4, Peragon Tonneau Cover, LineX Bed, 35% Window Tint on All Sides and Rear, Full Nose Paint Protection Film, Husky Mud Guards, Lasfit Floor Liners, VIOFO Dash Cam
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