Cleaning Click Kybd Switches

[WA2SQQ]

I acquired two Marconi 2955's that seem to be in pferfect working order. A few of the numeric keys are intermittent, probably diry from a few years of sitting on the shelf. I'm working on removing the keypaad which appears to use the "light touch " key click switches. Does anyone have any recommendations to clean them? I suspect they are sealed switches, so it may not be as easy as spraying some Deoxit into each switch.