Greg, as Jim say's go check out my thread. When you consider a shower there are very few places water can get out. If it is not the faucet area then you need to check the outside of the shower for leaks along the edges of the glass to see if there is a void in the sealing of the glass from the inside. Just as a precaution I seal every seam on my showers and that stops it. If you have access to the bottom of the shower (might have to remove basement walls) check drain to ensure the fittings are tight. Don't forget any water that leaks and does not make it to the ground is probably laying in the underbelly. Look for an unusually low hanging spot. If you have water there just punch a hole to let it drain and you can tape it back up later with a good 3m tape designed for plastic. Good luck.
Note:In removing the faucet, before you do check that the fittings are tight on the back of faucet before doing anything else. They will come loose from bouncing around down the road. You would be surprised how much does.
If your shower has the big screw port access panel, after removing the plug reach inside to feel around for moisture, feel around the back of faucet where connections are and then the backside of the shower beneath the faucet to see if it is coming in there, then around the access port flange on the back. Be really careful doing this, remember these showers are fiberglass and the back of them are rough, often there are fiberglass hairs hanging and waiting for someone to get pungied! If you are not comfortable with doing all this take it to your dealer and ask them to check these areas for leaks. Good luck.