Hi guys, I am currently testing a space plane I built, which is designed to take off using propellers and then use rocket engines when it gets to upper atmosphere. Unfortunately, I can't even get it take off from the runaway without severe drifting issue. It all starts well, but after getting to about 30m/s on the runway, the plane starts to drift and very hard to take off. I checked that the wheels are all aligned so don’t know what’s the issue. Spent several hours to fix this problem, but my attempts so far had been unsuccessful.
Of course, I checked the wheels and made sure they're all aligned. So I don't know how to fix the issue. Wondering if you guys could help me take a look if you have time? I uploaded my craft to KerbalX. Though I'm using mods, the spaceplane itself should be made of all stock parts. If you could help me take a look, I would be very grateful! Thank you!
https://kerbalx.com/Noblejms/Helio-Mark-3