My last 2 races were spoiled because of the loose diff, it stays good for about 2 minutes, after that I had no braking at all (I'm using the one-way) and the next moment I thought I had an RC-plane when I took a jump
I'm going to replace it with the Hot Bodies screw (with titanium coating), it's expensive ($6,50 for 1 screw and nut
) but probably it will be worth it. I also ordered the screws from HPI.