What CID number is that? Right click on the item and select properties, it should be listed in there somewhere. Some items have Options to control elements like that, otherwise I'm not too sure. I don't think you can apply a castle notch directly to a connector (which would be useful). There is an option to control hole spacing on round connectors, however I don't know enough about this function to whether this may be a relevant option.

The best (by no means a good one) option to my knowledge would be to make a connector that gives you the requires length and have someone cut out the tabs. Sorry I couldn't be more useful.