I own a repair shop and make repairs on all brands including Redcat and Kazuma. Have you heard of any problems with second gear or the gearshaft bearing failing on Redcat or Kazuma RFX-110s? It uses a roller bearing and really should have a needle bearing instead in my opinion. Also I reccomend running slightly more oil that the sight glass hole calls for due to this bearing not recieving ample oiling. It sits fairly high in the gearbox and could be not getting oiled properly in my opinion. I have had problems getting parts from Redcat recently have you? Do you stock parts for the Kazuma & Redcat transmissions and if so what does a new transmission set cost for the RFX-110?