Several things (most have been discussed) main ones that I have found are the size of the clevis and the wire shaft hole size not beeing large enough for the wire size, also in some cases "pinching" the ends of the clevis may help due to the spread being to large in conjuction with hole size and wire size ... Colorado Blades spin the best for the front spinner ... Honestly I have "boiled" it down for my use that a "Single Spin" really does a better job for ME ..
My 2 cents worth
JSC