Got myself a used Stronglight "Marquee Depose" French threaded bottom bracket (cups & spindle) for my 1976 Motobecane Grand record. Put it in with 11 new 1/4 ball bearings on each side and added the crank arms. But I am finding that if I tighten up the left cup sufficient to eliminate the wobble or play about the axis, then it is so tight it starts to bind. Haven't had this problem before. Have I put in too many or the wrong size bearings, or am I just being ham-handed on this one?