Rear Sets 550 K3 / 500 K3

[Ewan 500 K1]

Hi,  anyone got a 500 K3 or 550 K3 that could do me a a wee favour. I bought a pair of second hand rearsets off ebay a while ago hoping to use them on my 500K1 ... but the rear brake spindle is too big in diameter to fit in the hole in the frame ... ie the rearset part that replaces part 15 in the attached diagram is too fat in diameter. Its not miles out , maybe a millimetre at most.  Would really appreiate if somone with a K3 could measure the diameter of part 15 in the ddiagram (part number 46515-404-670) and let me know . The spindle part number changes from the K1/K2 to the K3 , so wonddering if the rearset would fit a K3

[Ewan 500 K1]

picture of rearsets

[stuartni]

i will try my best to remember to check when i get home 

[busa]

I have still got the original  brake rod  and  lever spindle  can measure  it  tomorrow  if require

[Ewan 500 K1]

that would be great Busa, down to 0.1 mm if possible