I have alot of molds by most standards. For ball head jigs I have both barb and ball collars, but; no plain collars. I cut off the collars when I want a jig without a collar. I never get an exact 1/32 or 1/16 ounce jig, but pretty close. Does anyone think this matters. I have been debating if I should buy 2 more molds, 1/32 and 1/16 for some crappie jigs. Any opinions? Thanks, Pop