Got it. I had read that and thanks for the reminder. I have the small parts kit which contains a new set of the needle bearings and a retainer.....but as you've suggested, I'll be sure to locate the ones that fall out and inspect them and reuse if good. Hotrods suggestion to tilt the trans is a good idea as well. I have the J-2669 Clutch Gear Remover so that will help with the removal.
Thanks everyone for your suggestions!