2017

Wow 26 years doing this and your that clue less, sorry to hear. I have been at this alot longer than you and used to be a KTM Tech years ago. I originally posted carb info on page 1 of this thread trying to help you get set up. Then I was trying to reply to Joe's question with what I have learned and many others that had ridden both bikes {125 & 150}, but I guess you didn't like my reply.
As a former KTM Tech you are the worst kind of customer to deal with,, the guy that thinks he know's everything but knows nothing. Lets re visit a few things. 1} you stated the 2016 125/150 came with 36mm carbs, false, they came with 38's. 2} you claim the 125 and 150 ride the same with the 150 having more power, if you had actually ridden a 125 you would know the engine characteristics are completely different, this is why most reviews on the 150 state they would rather race the 125 if both bikes are bone stock. 3} This next one I purposely left out of my reply to Joe to try and keep this thread on track but I guess you had other idea's. You said "The 125 is the exact same as the 150, same crank and everything just a little more displacement, they are both basically identical, a 125 becomes a 150 with just a cylinder kit, that's all." Do you just make this stuff up as you go?? because if you knew anything about these bikes you would know the 125 has a different ECU, power valve main spring, gearing, Compression ratio, jetting. 4} As far as riding together - I'm going to assume you are clueless as to what the ISDE is, but man would I love to get you out here in the Rockies with our monster climbs covered in wet roots/rocks and slimy logs and watching you turn into a puddle.
I have to give credit where credit is due though, when you put the word "HELP!!" in the title of this thread, you weren't friggin kidding.