Tinsy….sorry for the delay, got dragged around Tesco for the last hour 😥
If you look at the lower pic, you will see a small cutout I made in the side of the bearing and seal. When this is lined-up with the grease port when fitted, most of the grease goes into the bearing 😉
I recently stripped this BB after over a years use, and there was very little grease in the plastic tube. This was a used BB that had started to feel a liitle bit rough when I decided to do this mod. Although there is still a very slight roughness, this has been the same from day one, and I don't see why it should'nt stay working for many years.
Tinsy, I could Modify your BB. Just out of interest, are your replacment bearings 6mm wide as per originals, or are they 7mm like many of the aftermarket ones ?
As for marketing something like this, the main problem would be the position that the grease port ends up ! On my BB I marked the place I wanted the ports to be with the BB in place, then removed to do the tinkering bit 😉