When your ready to put your propane cover on (after you have added the GasStop valve) and it doesn't fit, Hmm. You might be looking at why? The GasGear pigtail 90° hose accessory will do the trick. It's perfect as a replacement piece or use with the GasStop valve. You will be amazed how the propane cover fits, without having to mount the tank and the safety valve sideways . Just replace the GasGear pigtail hose in the step by step "How to install" and you can rest assured you have the propane solution for your next adventure in the RV!