I havent had much of a chance to play around with my WR125 with a FBF 135 kit lately due to work and family committments and due to the fact that I have been digging my Berg FE550 a lot. The bike was collecting dust in my garage as I was chasing jetting issues with the TMX for a long time and was starting to consider getting rid of the bike altogether. The 135 is definitely more finicky than the stock 125 jug with regards to jetting. The bike had only been ridden a few times this year and I had to either sort it out or get rid of it altogether. I think I finally have this bike dialed. I was riding it today and let a few other guys ride it and they cant believe how much power it has for a 125/135 2 stroke. The final piece of the puzzle was when I went to a 36mm PWK carb. It took me a while to get it jetted right but the results made it worthwhile. The bike is far "snappier" and doesnt have that mid range sputter that I couldnt seem to jet out of the TMX. The spooge is also non-existant. The 135 with the PWK is FAST! Plain and simple. I am not sure what made the biggest difference, the 135 kit or the carb, but the combo is awesome. I would recommend both to anyone who has a WR125. I also added a set of FBF 50mm works forks with billet triple clamps and it is now one of the coolest little bikes I have ever seen. Sadly, I have almost doubled my investment in it since I bought the bike but I think it will be worth it.