Thx chaps.
Yes all over the picture posting now, so easy, not sure what everyone is honking about.
Not sure the sponge on top of the heater was ever meant to stop anything but leaves and debris but there absolutely MUST be drainage pipes somewhere. I’ll have to investigate.
Good idea to get a bigger cover to extend over the vents. I can see water is also dripping down from the bolts that secure the heater on bulkhead too.
I had all the leaks on my Trad through wiper spindles etc and now remedied.
I’ve switched garage space and put the trad outside (more weatherproof ) and are inside.
Later I’ll unscrew the 2469 little screws and remover the black dash undertray.