Weber Spirit Rain Infiltration

by vin
(ny, ny, usof a)

Why does the drip pan fill with rain when the cover is closed. Whats the rain infiltration route?

Paul's Comments:-

I've no experience of working with the Weber Spirit and least of all rain infiltration. So in desperation to get some advice for you I took the opportunity of contacting Weber directly.

Shame on you Weber, you haven't even bothered to answer me! So I have to apologize for the lack of an answer and throw it open to all.

Does anyone know the answer to our friend's problem?