suzuki DF 2.5 propeller stuck, help please!

Going crazy on this one. I have a relatively new 2015 DF 2.5, very lightly used, probably less than 10 hours total. Everything works as they should. Trying to get the propeller off for maintenance, got the cotter pin off, but the propeller just won't slide off. Tried to use a flat head screw driver to pry it open to no avail, even dented the bottom gear case cover. I can see there are some fishing lines stuck in there but don't think they are that strong to hold it close?! The propeller turns freely, works just fine, but just won't get off. Other than the cotter pin is there anything else needs to be loosen? Help pls!

Never mind, I got the problem solved. I didn't know that collar and the propeller are two pieces, I was supposed to unscrew(which is crazy tight!) the collar first.