Spare nozzles are pretty handy. Cut the nozzle on a 45 degree angle or whats comfortable for you to hold while working on the engine. Then on the tall side nip a small Vee out of it so its about 2mm wide. Thats how wide your sealant will be, the height will squish down giving you a full cover of the case surface. Wider surface needs a wider Vee. Squeeze too hard you get more sealant travel too fast and you get less. Do a few practice lines so you get the feel and squish it so you can see how wide the bead ends up.