Great for recoil reduction - DPM Mechanical Recol Gen 4 Reduction System

I bought this for my new Glock 41. The stock guns recoil and trigger slap are pretty bad compared to other similar 45 acp. I was disappointed about the options available. This product definitely took care of the recoil problem but the gun doesn’t cycle. Instructions for the 41 model don’t seem to exist. They do send 2 washers and 3 springs so it’s a trial and error scenario. I have a few more combinations to try so hopefully one of them allows the gun to cycle properly. Wish I could find some instructions that explain which washer and spring is for the Glock 41 .45 acp but as for recoil reduction it is as advertised.