Chunks

Thanks for the reply, Devogen. I have tried it with mechjeb and without. I have tried it manually and with the ASAS (both with and without RCS). I climb at between half or 3/4 throttle at a rate between 40 and 60 ms. Above that, it gets worse as it goes. I have made sure to shutdown the rear engine. This is without any payload whatsoever, as I imagine that the vehicle itself would be balanced allowing the center of gravity manipulation for payload inclusion to be simplified. In watching the ASAS input, the increase in negative pitch bias slowly increases with altitude until the control is completely maxed out, at which point an irreversible pitch-up slowly begins. I was able, for a short time, to balance it by toggling the rear engine on and off, but then encountered roll bias that unbalanced the trajectory and increased further destabilizing aerodynamics. I figured I could try to manipulate the balance by including a payload, unfortunately, I couldn't figure out how to add the payload to the cargobay because it tries to place it at the bottom of the craft and not the floor of the bay. I added a radial point and decoupler, which mounted just fine, but then the bobcat refused to snap, again, above the base of the craft. Any advice with this additional knowledge? Thank you in advance.

Mechjeb can't even fly the T-51 above 3K without it doing backflips.