I have a cast stone shower tray, that has a leak somewhere around its perimeter (2 sides are Respatex)
So intend to reseal ........... what is best wisdom - cut the top 10mm off, give it a good clean and put in a good new bead. (will make it slightly wider as well)
Or use a silicon remover get a lot more of it out and then reseal.
I used Dow Corning 785 last time .......... anybody know of something better?