Screenshot
This is my rocket. I am early in the game and have built the best rocket I can to do science and try to hit orbit.
The problem is my rocket tips over after discarding the second SRB. Here's the parts list:
MK16 Parachute
MK1 Command Pod
SC-9001 Science, Jr
Experiment Storage Unit (Couldn't figure out how to open it, so I stuck thermometer, goo pod, and barometer on the outside. Also stuck two sets of batteries on it to power the SC-9001
Heat Shield 1.25 MM
TD-12 Decoupler (All Decouplers are this one)
FL-200 Fuel Tank
LV-T30 LRB
Decoupler
BACC "Thumper" SRB
Decoupler
RT-10 "Hammer" SRB
The Fuel Tank and the BACC Thumper both have four sets of Basic Fins on them.
First stage burns fine. I begin angling the rocket at 70 degrees. Separation and second stage also burns fine. Maintain attitude. When separating the second SRB, the rocket begins to tumble forward. Points down and can't get it to right itself.
I read about heavy-drag and moved the fins around some. It changes the behavior a bit, but doesn't fix the problem.
Ideas?