Meatmissil3

Hello fellow jumpers :) I am thinking about downsizing from my crossfire 139 to a katana 120 but I have heard that the katana is a lot harder to judge exactly where it is going to come out of the dive. Also I have heard that katanas need to be loaded at 1.7 before they shut down properly and before they start handling properly. Does this sound right to people that have jumped katanas before ?