All of the guards on this saxophone were mangled. I took them off and restored and refit them. Also, in the upper right picture you can see that there is a flange missing for the key-guard. It was in the case. I refit and soldered it back on. In the pictures below, you'll notice my C key had a broken silver solder joint. I fixed that as well.
Below is an example of how we check for leaks in saxophone pads. We use a light in the body of the saxophone and look for leaks using a light touch on the keys.