Thanks for the reply's. No offense meant for Suzuki gear boxes but this is my history. In 1980 I had a RM100 with a few extra neutrals. Heard that was normal as most had extras after some time. In 88 I bought a RM250. Was a nice bike but had a false neutral between 3rd and 4th. Popped out of gear on the face of a 70' table top. I specifically remember being upside down and thinking "I need to get away from the bike". Lived to tell the story and more to it. Now my kid has this 125. Only does it (It seems) between 2nd and 3rd under hard acceleration. Glad to hear that they have been good for the last 20 years so I can find something wrong rather than a gremlin that will never go away. Coming apart next week with the micro fishe open on a tablet.
As a side note this thing can carve a much sharper line than my 12 YZ125 and seems to give nothing up on stability. Have not ajusted the YZ much yet but I doubt it will ever corner like this thing. So much for being "outdated".