Please help! I just got a new above ground pool pump on amazon, and it doesn't come with fittings. The outside and inside is threaded, outside is 2.5" I believe and inside is 1.5". the hose that comes with my pool has a 2" threaded end. You'd think it would be easy to find a 2 to 1.5 threaded on both sides connection, but I can't find it at all!