[BB_TX]

I have done mine 3 times. It does take near a full tube per hub to completely push the old grease out and fill each hub with new grease. Like you, I used a red hi temp grease so I could tell when the new grease started coming out. As long as you kept the wheel turning and pumped slowly as detailed in the video and Dexter instructions you should not hurt the seals.

There have been some people reporting having had grease get passed the seal and on the brakes. The fact yours don't seem to work as before is concerning. Probably need to pull the hubs and inspect the brakes to be safe.