As per the thread title.
I went to one of my high seats today, an X3M1 portable, and found that a sizeable bough had fallen from the tree, striking the shooting rail on the way down and twisting and shearing the rail supports as a result.
The picture above shows the seat when new. The damaged elements are the two vertical supports, which remain attached -albeit thoroughly bent out of shape- at the bottom knob but have sheared under the sliders at the top.
I've written to X3M1 enquiring about obtaining spare parts, but in view of the range of knowledge and expertise on here I though I could do a lot worse than ask whether anyone knows someone who could make replacements, as the seat is otherwise undamaged. If it helps, I have another -intact- seat of the same type, the supports from which might be used as a pattern.