Couplers not working in .20

I dont know if the coupler code has changed but the current setup doesn't weld on spawn, here it is.

coupler nodes ball

Code:

        ["rdrr8",-0.488,7.626,0.952,{"couplerTag":"body_rear_hinge_1","couplerStrength":2001000,"couplerStartRadius":1,"couplerWeld":true}],//26
        ["rdrr9",-0.488,7.635,1.828,{"couplerTag":"body_rear_hinge_2","couplerStrength":2001000,"couplerStartRadius":1,"couplerWeld":true}],//36

coupler nodes hitch

Code:

        ["z26r",-0.488,7.626,0.952, {"couplerTag":"body_rear_hinge_1","couplerStrength":2001000,"couplerStartRadius":1,"couplerWeld":true}],
        ["z36r",-0.488,7.635,1.828, {"couplerTag":"body_rear_hinge_2","couplerStrength":2001000,"couplerStartRadius":1,"couplerWeld":true}],

the setup wont weld on spawn