I was so impressed by the smooth and silent shifting that Shimano’s new ‘composite’ chainrings give me on my SLX chainset, that I bought an extra composite middle ring to put on my other bike which has a M542 Deore chainset.
Tried it today and although the chainring bolts are in the same place, it seems the spider arms on the deore are longer than the SLX so the thing won’t fit!
Anyone else had this issue, and found a solution? I’m considering filing down the ‘lugs’ on the chainring to make it fit, as this would seem easier than the alternative of trying to make the spider arms shorter somehow.