Just wanting to know if anybody has encountered issues with spring tension with this part. As a lefty, this part is pretty much essential for me but I've had to adjust (bend) the springs in both I installed on my 2 Gen3 17s. Not really a problem but I hate tweaking factory springs. I also run one on my Gen3 21sf and have had no issues. However, both 17s had premature lockbacks almost every other round until I tuned them. Thanks.