Good to know Headling!
Now… if they could only release them YESTERDAY! LOL
Personally I wouldn't mind captured cups in certain areas, but as long as the cups are solid, the traditional cups will work perfectly. They should try and figure out what material Kyosho and TLR use because they are so darned durable and strong. I've bent Lunsford turnbuckles using those.
HeavyD99,
Yokomo Ball Studs are 4.3mm but run metric threads. The Lunsford replacement Studs are 4.8mm so you could get a set from Lunsford and either use their ball cups or go with the TLR/Kyosho ones, but they won't be stealth black unless you dye them, but that plastic is so well finished I'm not sure the black would take.