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IMO, That CEK needle is probably a little lean on clip height, and the #7 slide is probably lean as well, especially when used in a 36mm carb. The triple taper needles that I know would work in that bike, with that carb, are no longer available. I would be looking to use a richer CCx needle, along with a richer 6.0--6.5 slide. The pilot and main do look like they would be in the ballpark though. I'm not sure if anyone is going to get you right on, you're going to have to do some testing on you own.

We normally ran number 5 slides in the PWK36s as well as the PWK38s on the later model CR125s. That 1/8th throttle range is the slide. The spec we started with in the PWK 36 was a 52 slow, CGK needle, 175 main and 5 slide.

Not 100% sure but I'd be looking at the slide. The new YZ's run well with a #5.5/6 slide. Different bike I know but typically 125 to 125 jetting is in the ball park between brands on the same carb. Have you tried Pilot sizes either side of 52 with the CEK Needle? If you have and you cant find a Pilot to work with the needle, then the carb slide is your only option left for that throttle range. Another one to check, and i dont mean this to sound patronising, but is the spark plug correct? I made...

It's likely to be the setting, maybe 1p1r.

G2 ergo make a modified domino that is quick turn. 36mm carb helps also. Better pickup and shorter pull. They still tev well

No toil has gone down hill, I can’t get their oil to stay on the filter. I used them for years without problems but had to give up on them. The belray oil rickyism is referring to is without a doubt the best stuff. I used it a long time ago when I was a kid just starting out, but got tired of having to clean my filters with gasoline. Maybe Ricky has a better process? As of now I’m using maxima fab1 spray on oil with their spray on cleaner. I feel it’s a good balance of effectiveness and...

Look at the Oem skematic online the description most of time gives the details

Interesting that ChatGPT didn’t have any concern of bad piston rings

Double check the voltage regulator. Should be on the left side, just behind the frame neck.

100hrs is pretty good for a basket,,,IMO…

I'd consider upgrading to a more modern Airstriker carb. Anywhere from a 1996 onwards. I currently have a Kehein off an 08 R250 to test on my 1989 but haven't got round to it yet. The Keheins from 96 onwards have a dedicated idle screw and are just all round better carbs. It should also be a straight swap into your bike. You can pick them up pretty cheap too.