Its funny my new couplers dont have the tightness issue with the older design like the photos shown do. The only issue is the older coupler does not close without some force when coupling to the new one. Keeping the old truck nuckle closed and the new one open the new one closes very easy. Maybe my old trucks are from a different batch run and not molded as tight as those in the pics. I have tryed every type and brand of trucks and couplers I have. Tryed coupling to each one of them with the new truck and coupler design. They work on everyone except my kline couplers. The kline couplers I have dont like my other couplers either. Go figure. I still like the new ones though. Wish lionel would sell the buy themselves in a two pack. I would buy more for some of my older cars.