Today I picked up the replacement gun a Ruger GP100 that they sent to my LGS. Ruger is great for customer service. This gun I requested after all the problems with two TALO SP101's returned to them for repair. Here is a picture of the gun they sent.
Glad you received the replacement. I Love my GP100. I also have the TALO SP101 and had to go back and read the problems you have had with yours. Mine is brand new and the only thing that I notice on mine so far (unfired) is that when I swing the cylinder closed I do not rotate it by hand I usually pull the hammer back and rotate the cylinder in position that way (when not loaded) it helps to keep the ring off the cylinder.
When this done my cylinder is very hard to cock the hammer back and the cylinder feels like it is locked up. After reading you're threads I am hoping that after a lot of use mine will free and loosen up.
Good Luck on you're new GP100 "Great Gun"