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Frankly, I would have marched down to the mechainc and gotten the dough to get the bearings replaced, somewhere else, FIRST before fooling around.
That being said, be aware that the bearing sets are line-bored, and have to be replaced as an entire set. There is a very specific procedure to installing them in the manual and it isn't a casual job. It is critical to determine that a chain-free, cam follower-free cam spin freely with no binding or tight spots in 360 degrees of turning.
Regardless of what you do, I would buy a new set of the plastic fittings for the oil tube, right now, and install them before driving it further. I don't think that they are designed to be removed and then reinstalled, period, never mind if they are old. When I did mine, it was a little tricky to get them to truly "click feel" in place (this is probably where he made the mistake, they were old and probably didn't click). It took more than finger pressure, but obviously a lot less than a hammer, to do this.
As to if the bearings are "OK", I can't really say, but it does seem like you might have gotten to them in time. OTOH, I personally would always worry a little in the back of my mind about unexpected cam-binding that would definitely be disasterous. I defer to expert mechanics on this issue.
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