Does anyone know the overall length of this needle? I haven't been able to find it by googling so far. This is the standard needle for my 111W117, which I've adjusted to take a 135x17 (but it's a shorter needle). This probably explains why i can't get the 1/2" under-the-foot that the brochure mentions as the needle bar is hitting the inner foot with this needle at 3/8" clearance.