
yes, I have, with positive results.
However, it is not worth the trouble. Save the money you would have spent on springs. Use the time you would have spent on trying to get one to strike 100% to raise more money.
Take the money you saved on springs and the money you raised not screwing around with the springs and buy something you don't have to fix that is brand new right out of the box.
If you have a 100 9mm already, sell it.
If you have a 100 40 cal sell it to me at a greatly reduced price.