Always good to be DiY, a bit of leaking from the cap isn't a big problem, it doesn't indicate anything wrong other than maybe too much, the grey and gooey does point to a bit of moisture but again not a biggy as this is what it's partly there for....Youvé done well, I can say run away from replacing the broken cable it can be a horrendous job, the cable bit is okay its the other seized up bits................................... With your wheel set up spin it around if it just turns freely for a couple of rotations, doesn't grumble or feel rough to touch as it spins then bearings are good, of course no lateral movement, when the bearings are done up nice probably 2 spins , adjust brakes so that they don't grab but the wheel may only get one rotation and just come to a slow halt, sudden halt means back off a notch once you drive away and apply a few times they will bed in, a good base line is at 40kph hit the button and if they lock up, then at 90kph they will pull up nicely....always spin wheels in forward direction, front and rear leading shoes grab better going forward than in reverse.
No weather report from here, we have enough of you lot up here already.................