No but I weight 250..and my fat ass woulnd sit on those.::Note:: This is not how they look now, i cut the extra metal off and cleaned all the edges up, primed and painted them black to look nice, but here is an idea for you.
that was posted in the org. message and its not springy at all, its bent steel, its solid, unless you way like 300lbs
I see that you welded/had someone weld a piece on your bracket so making a better bracket shouldn't be a problem.you need to get some 1/8"-1/4" steel strip's and make like a box shape out of them and connect all four mounting point's so,it at least makes your seat's mount rigid on the floor.lol thats why i kept the stock seats. well you do as you wish, was just trying to lend an idea. sorry