I tried that in a another car I had and it always filled with condensation once it had rained, but that would clear after a couple of nice sunny days. Am not doubting you but are
you sure that drilling a hole at the bottom will work for sure?
Another thing, anybody know anybody in the NW Melbourne suburbs who is a tad slack when doing RWC? My local guy always wanted to replace the windscreen & moulding but the last 2 times I've been there he's let it slide.
I've only got a 14 day UVP right now but times are really hard and I don't know when I'm going to be able to get the roadie done. I'll do my usual and use the low pressure degreaser on the sump to clean up any oil, then clean it all off with the low pressure water setting. I do it just before I take it in just in case so it's nice and clean