Wms tuck and run gears

[ronbush915]

Im not trying to sound stupid but i bought a 2019 kart slack. It had a bunch of wms tuck and run gears i think i put them on wrong. Has run out in sprocket chain gets loose and tight. What matting surface is suppose to go together i put half circle to half circle. From previous nut makes looks like im wrong any help would be appreciated. Im new to this kart stuff i had like 2nd pic

 

[OVALTECH1]

replied to other post... that pic is the wrong way

 

[ronbush915]

Thanks so much i just got this kart came with sprockets someone ran wrong before me so they are worn wrong i ran small circle together and tons of runout the right way i figure they are worn bad from being run backwards thanks ron