Mounting the reed is of utmost importance. Looking across the tip with an illuminated background, like a window or shaded light, push the reed up to the tip and move it until it is even - but be aware that the tip is not vertical - it cuts under like a shark nose, so you line up on the bottom edge of the tip, not the top. Then you make sure the reed is centered at the rear and at the tip. Then you check the tip again to make sure. I recommend putting the front edge of the ligature at the end of the bark for starters. Tighten the ligature until you can twist the mouthpiece if needed without having the reed shift.
Mouthpiece patch; if you're using one, make sure it does not crowd the tip - 1/16" clearance is required at the tip and the patch must not crowd the edges either.
Mouthpiece patch; if you're using one, make sure it does not crowd the tip - 1/16" clearance is required at the tip and the patch must not crowd the edges either.