are 47re autos weak?

Listen, I'm not here to tell you what to do I'm just telling you what has worked for me over the years. There is lots of stuff on Google. It's not a bad transmission and that is my opinion.
I have a 47re in my 01Ram3500 v10 4wd dually. I bought it used, so I don't know the history on it. It has 210k miles on it. I really like it, but the trans just started leaking at the front pump, so I'm going to have to get into it. The trans has been rebuilt at least once, because the case has been painted & it has a nationally recognized rebuild tag on the side of it. I can't recall the rebuilder's name right now, but they are more familiar to me as an engine rebuilder than tranny guys. Anyway, when I looked online, I was just surprised how many negative stories were online about the 47re, thus the reason for me posing the question on this thread.
It makes sense that many diesel owners have had problems after boosting output on them.