Art wrote:

I can't help you with your choice of silicone but examine your track
carefully. Many are made so that you should not caulk the edge that faces
the inside of the tub. That way if water gets under it it has a way to flow
back into the tub.



Shouldn't get under the track if properly caulked. I have a neighbor
who rotted a sizeable section of his bathroom wall because his shower
unit was never caulked.