Haha, no worries!
Getting access to that area is pretty easy, you simply remove a couple of screws above where the battery goes (where the lock is for the battery) and that top piece slides out. From there, you can visually inspect the top of the downtube which is where I saw water.
I'd say...
Hey! I'm in Canberra too! I have a E10 which I bought from Volition in Sydney. I'm out at Majura Pines most days of the week. Let me know if you want to catch up and have a look and once yours is built would love to see it.
Btw, if you want a local Pilot Bike Co in Cooma are doing a E10 build...
Hey there! Signed up to reply to this :)
I had the exact same issue, here are the symptoms I had:
^ power skipping
^ erratic battery
^ battery clicking
It ended up being a water / condensation problem in a combination of two places. There was water in the power isolation switch at the...