That's odd that you have to unscrew the endcap. I've only used 350's but I thought that all the endcaps were just pushed on. If the endcap is screwed onto the axle, it looks like you still could tap the axle / endcap assembly out with a soft hammer.
Otherwise, I would shoot an email to their tech support. I have always had extremely good responses from their customer service. Last week I emailed them about getting some 350 decals as there aren't any aftermarket ones like there are for the 240's and I didn't want to put 240s stickers on a 350 hub. They sent some right out to me, free of charge!
Either way, good luck with the bearing swap.
