Following above gomog post my strong advice is DO NOT attempt to adjust spokes in-situ on modern wire wheels with tubeless seal. I have the stainless 7J variant as supplied to MMC by MWS. I damaged the seals on two following minimal adjustments using a spoke key

. You can see on my image above how easily this might happen if the spoke nut moves. The damage through thick layer of sealant was immediately apparent following tyre removal. Fortunately only one spoke was touched on each wheel and localised repairs have stood the test of time with the use of MWS supplied sealant.