I need a 12mmx1.75 shift knob boot retainer which I can't find ANYWHERE. I have purchased 2 and both came in the wrong thread and didn't fit. I see the 12mmx1.75 listed and shown but upon further review, they are NOT 12mmx1.75 but are 12mm x 1.25. Or 1.50 at best. Does anyone know where I can find a REAL 12mmx1.75 shift knob boot retainer???