Sounds like you just got some cheap plumbing fixtures.
There's always some play in those connections, but too much of an angle and you will never get a [permanently] tight seal. Whatever you can do in the way of fittings or rotation of the garbage disposal to make the 2 sides of the connection fit flush, the better.(1) The J-trap and the drain pipe sit at a slight angle to each other. As a result,
Those things could cause the threads to strip on either fitting as you try to tighten the nut down. Also if it's out of round, it's not getting a good grip on the threads.(2) the slip nut does not fit straight on the drain pipe and (3) the slip nut is pliable enough to squeeze out of round while it is supposed to be tight on the threads of the drain pipe.
Entirely so.. Are you able to get a look at them? Grab a small mirror if you need to and inspect the threads all the way around..Is it possible that the pvc threads on the pipe that the slip nut is screwing onto are worn?
We've all been there.. There's a member on here that started out with a bad smell coming from inside their wall and ended up being a complete demo and re-work of 2 bathrooms. Electrical turned out to have issues too.. (I'm paraphrasing, but something like that). So you haven't got it too bad. :no::thumbup:I am so frustrated with this so-called SIMPLE plumbing repair that I - could - scream!!!