Re: What is it with...
Those bearings are NOT OEM bearings. They are indeed caged rollers ('H' model anyway). Aftermarket kits, PivotWorks for example, use uncaged rollers. The advantage to them? The needles are longer due to not having the retainer pin machined into the overall length. The bearings are easier (ha!) to clean because you can take them apart.
As long as you anticipate the rollers coming out, you're usually OK. But...being surprised if/when they do...that's a headache.
As QC says...they will all go back in quite easily. Make sure the shell and the rollers are clean, use the suggested grease method and as long as you are not missing any rollers the bearing fits together nicely.
Not a bad idea to count the number of rollers before you take them out. Count'em twice even (get the correct count)! That way..when you end up missing a roller, but due to the bit-o-slop you have between all the others it
looks good...you
KNOW there's a roller what went missing SOMEplace!
..find it!
One of those magnetic parts trays works well in this case. Much less chance of the lil buggers running off for a game of hide-n-seek!
Don'tcha hate that?