Shimmed a few weeks ago and at that time put 50k wt oil in both diffs. Given that, I had an LSD action. After my last run, I noticed I lost one of the threaded pins that hold the axle on the diff. Easy fix after the LHS trip. However, that side of the diff seems to still spin freely. If I rotate it by hand it has to really get rotating to move the other wheels. All the others seem better "linked". Does this sound like the front diff is done? I'm unsure and really frustrated as I have never had as many issues with 1/10 Traxxas vehicles. I literally chase my puppy around with this thing...that's it.