All models have this "issue", but its more a matter of the sail being 3/4 of the way up... not that it is related to the CompTip. Its due to the luff curve and sometimes battens in a Cat sail.
Read the sail hoist FAQ for best results hoisting sails. Even at a National and Worlds level event I see people struggling for no reason. Its easy when done correctly.http://www.hobiecat.com/community/viewtopic.php?f=18&t=371
Pay close attention to feeding the sail rather than trying to pull it up into the feeder with the halyard.