Kyosho French team, I have to shime in !
I would favor a larger bearing but after a while the old hubs got some serious slop between bearings and hubs contact paths (metal/metal) and the smaller inside bearing is quite hard to extract so 100% on the new hubs as the plastic parts will help to stop wearing inside the hubs and are available as parts to cure any future slop/play.
I would buy the new hubs and find larger bearings (Kanzen ?) to have best of both worlds, large bearings and plastic sleeves
Gayo, could you explain us the "more grip thingy" due to soft plastic ?
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