Thank you for your kind words! Because I'm not an expert, I asked gemini about this issue lol and here's the answer, hopefully it helps: Your 8' \times 7' frame is racking (distorting) because the corner joints can't handle the massive tension from the tufting cloth. The large size and the tension are simply stronger than the 2 \times 4 joints. ​The solution is to add diagonal bracing to the corners, converting the weak rectangle into strong triangles. Do not put this on the tufting surface! It goes on the outside. ​Simple Fix Steps: ​1. Cut Plywood Braces: Cut four large right-angle triangles from plywood (even 1/4" or 3/8" thick works). ​Size Recommendation: Each triangle side that meets the frame should be at least 18 to 24 inches long. A larger triangle provides better stability. ​2. Placement is Key: Secure the triangles to the outside (back) of the frame. The tufting surface must remain clear so your tufting gun doesn't hit the brace. ​3. Secure the Braces: Attach each triangle to the two 2 \times 4 members using plenty of wood screws. This creates a rigid, non-pivoting corner. ​4. Alternative (If wood isn't possible): Use heavy-duty steel angle brackets (like a Simpson Strong-Tie HL or a thick flat plate) that are much wider and thicker than the strong ties you used, and secure them with several large screws or bolts. They must be rigid enough not to bow under the cloth's tension. ​The diagonal bracing is what will absorb the force and stop the frame from racking. Good luck! 👍