For those who have installed the factory supplied pitot / static tubes on the wing which does not have any provision for a drain for potential water ingress during flight in rain on the pitot tube, have you had any issues with your airspeed indicator?  If this is a non-issue great, but I know most pitot intake tube system have a built in pressure chamber and drain hole for water, and the Zenith factory supplied one does not thus my question / concern.  Any input on this would be appreciated.