Hi, amazing mod, cannot thank you enough.
Small issue with how your mod calculates mass. I have a payload of 4,789 kg being calculated as 4.8t (and fits on my 4.8t launcher) and another payload of 4,771 kg being calculated as 5.0t (and thus does not fit on the 4.8t launcher ). I'm running KSP 1.4.4, let me know if a part list is needed.
Cancel that, it was the mod that I was using giving a wrong reading of 4,771kg - MechJeb sees it as 5.032 t.
Thank you for the amazing mod that made me not give up on KSP!