The throttle thing may be, as some suggest, either crap between the grip and bar or a lack of manly wrist muscles.
Do wrist curls to get manly muscles. Otherwise, carefully disassemble the grip (watch out for the wiring for the heated grip!!!), clean it up with WD-40 and rags, lubricate it with Boeshield (Teflon grease in a liquid carrier), and re-assemble it. To reset the throttle position sensor, turn on the ignition and turn the throttle to full throttle and back (do not
just let it snap back) three times, turn off the ignition, all done.
The oil weeps should be tracked by cleaning the area (go with WD-40 as a solvent) and looking to see how long it takes for a track to show up, If it's in a hurry, not so good. If it takes a few weeks of active riding... meh... clean it up and watch it.
4% water in the brake fluid?!?
At the very least, have the fluid drained, the system flushed, and re-filled. I'd want to know what the fluid looks like as it comes out (clean or cloudy or ...horrors... with lumps in it). Frankly, this is something that makes me wonder how straight up the inspecting tech or the dealer is. This should have raised some red flags if it's for real. And it makes me wonder if it is for real. I'm just sayin'...
Finally, REPLACE THE QUICK DISCONNECTS
! ! ! There are two quick disconnect fittings (one for the feed and on for the return) fuel lines between the tank and engine. BMW used plastic parts that fail (there are QD's that have failed, and the rest will fail) and recall was issued to change to metal QD's. Unfortunately, not all bikes were set up with metal QD's. Look through the tupperware on the right side, over the crankcase, and you'll see at least one of the two QD's. If you see silver metal parts, you're probably good to go (check them both!). If you see white plastic parts, ground the bike until they're replaced. Failures can result in gas pouring out of the line with the damaged QD. If you're lucky, it's "only" a gas spill, if not...
See Beemer Boneyard
DISCLAIMER: I have no connection with BMW Motorrad or Beemer Boneyard save as a customer. Your mileage may vary. Batteries not included. Some assembly required.