I feel your pain, I'm 71, and my brain, (never mind my body), is not quite as sharp as it once was.
Ever since I went down with Covid in late fall of 22; my body is different. My Muscles often lack strength or endurance; to do the things I used to do, as a matter of course.
Lately, I have been giving my 40yo son the heavy end of whatever I need to move or carry. Occasionally my fingers are more clumsy than I remember; they just feel thick.
My brain seems to have survived Ok......... altho, sometimes I wonder.
But otherwise in good health.
But yeah, brakeline fittings have to be lined up dead straight.