Holy Cow, I now realize was not really getting anywhere near redline with the poorly made Chikuni carb that I had on there!
100% was issues with the carb. I finally got fed up enough to swap the old carb back in, stuck pilot jet of unkown size and all. I had cleaned it out previously, but other than that I didn't do anything to it.
Took it out and just plain WOW, steady pull till she screams and I wasn't even maxing it out. I haven't hit a highway yet, so no idae what the top speed is now, but hit 65 without even trying hard.
Previously I was hitting WOT with 5th and couldn't get past 50-55, shifting to 6th would then net me another 5 mph or so, again pegging WOT the entire time. I cannot wait to she what she can do on a more open road, entirely different feel.
My only complaint now it that I have alot more popping happening on no throttle engine braking. I believe I adjusted the mixture screw 3 turns, but I really don't I'm hoping proper adjustment will at least reduce that. I also had a couple stalls while braking with clutch to a stop, might be just the idle speed adjustment. Wanted to get out and do a quick test drive before I got to into the tuning bits.
Now I just have to replace all the hoses that have been long gone. And the pilot jet issue may stay just the way it is, I'm a bit more scared to try and remove it now that it is running so much better. If the mixture adjustment screw doesn't fix my popping, the next higher pilot (Assuming whats in there now is stock 40, would be 42.5, which I have...).
The hose barb on #15 in the fische:https://www.partzilla.com/catalog/yamaha/motorcycle/1996/serow-xt225h/carburetor
is also broken off, not sure if this is a vent/breather/overflow. Also not sure how I can jerry rig a hose connection with it snapped off. It the one with the plastic cyliner with the rightangle barb connector. Perhaps I could get a small threaded barb or something to thread into the existing plastic...? There is rust in one of the overflow tubes already, from not having a hose connected, so I probaly should work on getting everything closer to the way it is supposed to be.
I had been seriously thinking that maybe I needed a bigger displcaement bike, to make commuting more manageable, but with this new performance I don't think that is the case anymore! Even on 55mph highways, it was so sketchy with that Chikuni carb and the lack of power on the inclines. I guess there is a reason they go for $50-60 vs $300-600+
Thank you everyone for the input, especially #brer15
for pushing me to try the old carb!