Brand new, so not wear n tear, nor gunked up with solidified grease/grim/dirt/etc...
Think, or check out that the latch is adjusted properly and/or that it moves out of the way when un-latched
The coupler dome for the ball has the front (towards the TV) 'capture' the ball below the equator. Meaning that the opening is smaller than the ball
The rear of the coupler dome does NOT and is for the ball to move backwards towards the trailer and drop out of the coupler dome. The latch provides the interference below the equator of the ball
The ball also has a flat spot on the top and is to allow the ball to move backwards, away from the front of the coupler dome. Some coupler & latch setups just barely allow enough room for that flat spot to move backwards
Just some thoughts on what could be happening...first check to see if the latch gets out of the way completely and adjust if needed...but still allow it to capture the ball confidently...
-Ben
Picture of my rig1996 GMC SLT Suburban 3/4 ton K3500/7.4L/4:1/+150Kmiles orig owner...
1980 Chevy Silverado C10/long bed/"BUILT" 5.7L/3:73/1 ton helper springs/+329Kmiles, bought it from dad...
1998 Mazda B2500 (1/2 ton) pickup, 2nd owner...
Praise Dyno Brake equiped and all have "nose bleed" braking!
Previous trucks/offroaders: 40's Jeep restored in mid 60's / 69 DuneBuggy (approx +1K lb: VW pan/200hpCorvair: eng, cam, dual carb'w velocity stacks'n 18" runners, 4spd transaxle) made myself from ground up / 1970 Toyota FJ40 / 1973 K5 Blazer (2dr Tahoe, 1 ton axles front/rear, +255K miles when sold it)...
Sold the boat (looking for another): Trophy with twin 150's...
51 cylinders in household, what's yours?...