Re: TLC-X w/ Spring
To use the spring, slide the rod out of the TLC-X. With Pusher attached to the rod, slide a spring onto the rod. Then slide a washer onto the rod over the spring. Slide the rod back into the TLC-X.
Compress the spring during application (you could hold it with the set screw), then carefully release it. Some people use multiple springs, stacking washers between them. You could wear it without the collar and set screw for minimal bulk in your pants.