your dealer is bullshitting you to say the least. I am now on my 4th set of clocks, all the rest leaked. my dealer, robinsons in rochdale uk has been willing to supply the new part each time i needed it, to be honest he too is pissed off cos ktm should have sorted this problem a long time ago. it has been known about for at least a year now. the latest set of clocks has a different part number to the others which i am told is a new batch which are waterproof. time will tell.
hope this helps