I encountered a problem with the T100, T200, T400 and T800 tanks.
The T800 and T200 seems to have a bigger size than 1.25m parts and their nodes to attach other parts are inside the tanks. The whole part just seams to be scaled up a bit.
If I use the T400 in the VAB it has the correct size of 1.25m but when I load the craft on the launch pad the size is changing into something bigger. Something between 1.25m and 2.5m. And additionally, if I select a different variant in the VAB oft the T100 ore T400, it changes to the Ven’s Stock variant when launching the craft and after reverting to the VAB it’s not possible to change the variant again.
I’m using KSP 1.6.0 with Making History Expansion (fresh installed) and just the 1.6 branch you posted.
I hope you understand the problem I described otherwise let me know if you need a Log file or screenshots.
Thanks anyway for the amazing mode and the help.