I have a Yaqi 26mm rainbow handle that I would like to re-use with a Muhle STF 25mm knot. I have removed the old knot and as best I can measure the opening at the top is at least 26mm. It might be a bit less at the base of the opening, but it's very hard for me to measure that accurately. Assuming it's larger than the diameter of the Muhle knot's base, how do I best install it? Is there something I can wrap around the plastic base of the knot, or do I just center the knot and fill around it with epoxy? Or is there something I can apply around the circumference of the hole to make it a bit smaller? For example I have some JB Weld Water Weld that starts out putty-like but hardens to a waterproof solid. Any ideas that have worked for you?