I don't know if I am allowed to suggest items that I sell but I am probably about to find out.
I have just realised that one of the stem spanners we make fits the 750K1 perfectly so I have listed them as such to see how they go.
click here for websiteor click here for eBayI have looked at the part number for the nut and it seems pretty generic so I guess the stem spanner will fit quite a few things.
Please let me know if this is OK or have I crossed the line?