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Hi all, I've recently started my DT-03 Racing Fighter build, and I'm incorporating a number a Tamiya and after-market Hop-Up options (as one does). One such upgrade is the Tamiya DT-02 Ball Differential Set (#53863); despite being designated for a DT-02, this is listed as a upgrade for the DT-03 chassis. After assembling the diff itself and installing it into the gearbox assembly, I noticed the drive cups that came with the ball diff set were considerably smaller than the kit supplied drive cups. I've attached a photo below to illustrate this. The trouble is, this make it impossible to use the kit supplied dog bones (they simply won't fit in the small drive cups), and I can't swap the larger kit supplied drive cups as the interface to the differential itself is completely different. Now, I do have on order a set if steel alloy CVD drive shafts from GPM (part number DT3264SC), which I purchased prior to starting this build. The reason is because I will be running a 10.5T brushless motor with a 2S LiPo in this car and it's my understanding the stock plastic drive cups and dog bones become a weak point when power goes up. However, in light of this recent discovery, my question is will the GPM CVD drive shaft set work with the smaller drive cups of this ball differential? If not, what CVDs do I need to source that will fit these smaller drive cups? Should I be looking to replace the small drive cups with something larger instead? Any help at all would be greatly appreciated. Cheers! Michael