I just replaced the fuel filter on my 330 for the first time. I wasn’t paying enough attention when I removed the old filter and ended up with a spring in my drain pan. I’m not sure if the spring was in the filter housing or if it came from somewhere else. I’m thinking the spring may have been in the bottom of the bowl and is there to put upward pressure on the filter to keep it tight against the top of the housing? Is this correct?