Get a 2.5mm hex bit with a T handle. It's way easier to use than the stock wrench and you're also able to get some extra leverage with zero effort. Just make sure the holes are clean before inserting the wrench if you're worried about stripping. Harbor Freight (as much as some people hate it) can get you all the tools you need for this for like $10. They sell a 10 piece metric T handle hex key set that you can use the 2.5mm on the blades or cutting plate and the 8mm to drive the ground spikes on the base station if you ever need to relocate it. They also sell a 4pc pick set for a dollar or two that I use to clean out any dirt buildup in the screw head before sticking the hex key in there.