Problems with cargo bay drag with stock aerodynamics

[EdwardB3020]

Hello fellow KSP players. Today I made a decent ssto that can cary about 50 tons into orbit with the drag from the engines and radial parts occluded. However the cargo bay that is closed doesn’t get it’s drag removed and produces the most amount of drag. Any way to combat this and or reduce most of it? Thanks in advance  

[miklkit]

Most likely that drag is caused by something in the cargo bay that is a little out of alignment.  When that happens it is not seen as inside the cargo bay and causes massive drag.  Some of my rover carriers have that problem until everything is set up just so.

[EdwardB3020]

1 hour ago, miklkit said:

Most likely that drag is caused by something in the cargo bay that is a little out of alignment.  When that happens it is not seen as inside the cargo bay and causes massive drag.  Some of my rover carriers have that problem until everything is set up just so.

The payload is attached to the cockpit so maybe that’s what is happening?

[miklkit]

I had a bunch of screenies I took of the drag when I was fighting this problem, but I deleted them after getting it fixed.  Attaching anything to the cabin does not cause the drag, but it is caused by something being off center.  It may not even be visible.  The only screenie I still have is of a rover carrier after the drag in the cargo bay was fixed but before the slightly misaligned fuel tanks in front of the Rapiers were fixed.