Space Shuttle asymmetrical thrust help

@ColonelStriker So I was still tinkering a bit with this, got rid of the side interstage and put a new one and I am still not sure why your craft has a fuel transfer issue between the main tank and the shuttle. Maybe its because the shuttle has different tanks and not just one but that's just speculation. I made a shuttle, here is the LINK if you wanna check it out (it is not space-worthy but the fuel transfer on it works fine). Unfortunately the only thing I can suggest at this point is to rebuild it from scratch, or at least get rid of the center tank and side interstage and rebuild those and hopefully those will fix the issue, other wise try to go down to one tank on the shuttle and see how that goes. Also if you can't get help you can ask on the discord if you havent already.
I would still love to see this shuttle fly because I really like the design and aesthetics of it. Good luck!

@ColonelStriker I didn't know either, so that makes two of us! I thought fuel rates had been increased in one of the last updates so I am a bit confused myself.

Thank you for that info! I didn’t even know that separators have a limited fuel transfer rate! @KraZIvan

@ColonelStriker Thank you for looking at those. I took a look at your craft and I think a big part of the problem are the separators and the fuel transfer rates. The craft takes off well at first but after the fuel on the shuttle runs out, the fuel is not being transfered fast enough to the shuttle engines and so they seem to be stuck in a start/stop cycle that robs them of power. Idk if you have Discord but I'm gonna go on the Discord channels and ask other shuttle builders and see if I can find a solution to your problem.

I have perfectly centered the CoT and CoM but when the second stage is activated, the main thrusters of the shuttle seems to have an asymmetrical power distribution, I.e one of the four thrusters have a higher thrust level than the others @KraZIvan

@DPSAircraftManufacturer Normally before I spend the time to troubleshoot someone's craft, I personally ask questions to let them try to figure it out themselves, which is far more valuable to them than me taking someone's craft and the posting it as my own, even if they do get points. If they take my advice and still have problems, I would be happy to look at their craft but I also want to see how invested they are in learning, or if they just want someone to "fix it for them now". I'm not saying that is what is happening, here, but I do give people the benefit of the doubt and the opportunity to learn first.

Also I can't speak for Dogfish, but for me personally it's hard to make the time to help every single person that needs help, and to be perfectly frank it is unrealistic to expect anyone to do so. After all, this is a community and as such there are many other people capable of offering help, including yourself.

Which way does the thrust push you? does it create a pitch, roll or yaw moment, or a combination?

I would suggest looking at the CoM and CoT in builder mode, and make sure the CoM and CoT bug lines match or are as close to each other as possible (keep in mind you still want the CoM to be ahead of the CoT), and make sure they match in each stage. One mistake I sometimes make is too look at the CoM and CoT in "all" stages and not each one.

Maybe put rocket on the bottom of the orbiter

I did@Dogfish5550

Just change the heading