Before you buy anything. Take a strong coat hanger cut it so you have the bottom straight piece and bend a 1 in. right angle at one end. Bend the other end to give you a grip. Open the valve and work the hanger around inside the valve where blade sets. Often paper will get crushed into the valve seat and the hanger may snag it and pull it out.
If you start to get paper it may be just as easy to remove the toilet and work from the bottom to clean the groove
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles