after further research I can confirm its just new black knobs to adjust with but still the same sliding plates, and the weight sled has a slight different shape lol total rip off to get the new ones.
So To further save us some money, I just looked at the fact that the only difference between the 2000 and 4000 model is that the 4000s center shaft is 2 inches longer, and the adjustable one is able to slide out longer and a slightly larger top sled plate.
BOTH the 2000 and 4000 have a 1"diameter shaft
SO with that being said If i buy the 4000s lower shaft I just increased the weight capacity of my 2000 to just about the same as the 4000. If i cant find the shafts online you can get a 1inch rod with an end thread for your weight plate.
So glad i figured that out lol
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