I have never had this problem before, try using the MK.2 inline with the long mk2- mk1 converter with the NCS adapter, then use the smallest heat sheild.
Pressurizing Suits...
Painting Kerbals green...
Taming Rhino...
Setting up encounter...
Wernhering von Kerman..
Giving Bananas to Holy monkey...
Lithobreaking at the Mun..