As Mark says (and he’s always right!), it’s not possible to publish this to FCP X, but if you think you are going to need a longer build in or out why not just change it on your Motion project?
Go to the frame where you want your build in to end and hit “Shift M” on the keyboard followed by “Opt/Cmd M”, and then choose Build in Mandatory (or Optional) from the Type menu. Do the same thing for your Build out and except that you choose Build Out Mandatory (or Optional) from the Type menu.
As long as you then don’t want your title (or effect) to be shorter than the combined lengths of the Build in and out durations then you will be fine. And of course you can easily change these values whenever you want to if they’re not convenient.
Simon Ubsdell
http://www.tokyo-uk.com