I just installed one on my g5420 after having a 1 inch spring and what a difference. Before, the bigsby didnt feel or sound responsive enough and I had to use a bit of force to get it to do what I wanted. After installing the soft spring its so much more useable to me. With less spring tension I was worried about tuning stability but its just as good as it was with the 1 inch spring. I highly recommend 1 of these springs and at 10 bucks shipped I feel its a steal.