KSP Version: v1.0.2 32-bit on Windows 64-bit What Happens: Stack attachment gets borked. Mods / Add-Ons: All Stock Steps to Replicate: 1) Start with MK1 Cockpit [1]. 2) Add MK1 Liquid Fuel Fuselage behind it [2]. 3) Attach another MK1 Liquid Fuel Fuselage radially to Cockpit [3]. 4) Attach yet another MK1 Liquid Fuel Fuselage [4] to the last one [3]. You should see something like this: 5) Re-attach [3] radially to [2]. 6) Try to re-attach [4] in front of [3] (not radially). Result: As above. (this is mostly related to #4 post, not #1) [edit] OK, I tried those steps again and it worked. I had to set the camera at right angle, but it worked. I once had something like this without ANY way to normally re-attach some parts, I had to make new from part picker, because those already on scene for some reason did not work. Sorry, but I don't know what caused that.