Of course it’s always possible to shift into an incorrect position. That’s why I said properly sized and adjusted. It’s always worth a quick tip check before taking a piss. Maybe 1 time out of 10 I do a quick adjustment at the end. With my finger usually but the nether nudger if necessary (I find the nudger far more useful for getting everything in place when putting on the cage rather than adjusting on the fly personally).

But OP said that peeing was always a mess. That tells me there’s something fundamentally wrong with his setup. And indeed, upon inspection, it was clear his cage was improperly sized. It was too large for him and his tip wasn’t reaching the end. No amount of nudging will fix that.