Ah the same engine as me, so to me it sounds like you have the fabled front bearing leak. The rest is OK. Finished.

OK I hve just been out and seen a mate that owns a Jato, we measured out a 200m run up and then a 100m timing zone. We ran his Jato at WOT till it would go no faster, timed it between 100ms and guess what, 57Mph on the nose. So to me I believe Traxxas' estimate as I HAVE SEEN IT. But I forgot the Vid cam (as it's packed for CA) but next time we'll catch it on tape for you (Motopro, I'll also get in the pic so you can see the difference between me and Showtime).