I made my mushrooms from a diagram on here and the one thing I noticed between the drawing on here and John's mushrooms there is a 10mm difference in the thickness of material ie John's have 30mm thickness of alu for the taper to go through the ones in the drawing on here has only 20mm to go through so I would say you need a longer threaded draglink or have the mushrooms turned down a little 5mm off the top and 5mm from the inside....just my tuppeneth
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