Hi JR, I just got my new frame back from Glock for my 21SF. The original was starting to drop mags because of the ambi mag release. Glock knows of this with the ambis and exchanged my original for a standard mag release SF, no problem. Anyway, I had a 3.5lb. connector that I installed in my original frame and I liked it alot and took it out before I gave the original frame back to Glock. I have a Glock dis-assembly tool and I was trying to take out the trigger and locking block pins last night in the new 21SF frame to take the stock 5.5lb. connector out and to put the 3.5lb. connector in. The pins won't budge! It's almost feels like they are put in there with Loctite, which I'm sure Glock wouldn't do. I did not and will not use a hammer to do something like this. The pins on the original frame would push right out with the Glock tool. The rear trigger pin in the backstrap of the frame will move in and out like it should. Any tricks you could share to help me with this task of getting the pins out? Thanks!