Just started to feel a vibration in the trailer recently,noticing my front axle bouncing a bit at higher speeds. I have a 2016 trailstar nitro duel axle trailer. I replaced a wheel hub on this axle earlier in the year with the approved hub set up. After towing the new hub is not warm, grease is fine. I also changed 1 of my tires that had uneven wear with my unused spare, still no difference. Just curious what you guys thought it could be and what my next move should be...thanks!