To avoid notching a stud I wanted to make a quick 90 downturn out of a shower valve cold inlet. I assumed I could use the male end of a 1/2" street elbow to keep the pipe away from the stud.

But the male end of the Nibco ell I picked up at Lowe's is a pretty loose fit into the Moentrol inlet as well as other female fittings I tried. It looks like solder would fill it, but all the other connections I've made have been a pretty tight twist fit.

Is this normal for st ells or am I trying to use the wrong fitting?

Thanks, Dave