Jeff in your pic of your new fuel line.....the part that goes in the tank is to the left.....ease it down through then reach in with long noised pliers of forcepts which is what I use...pull it down until it seats in the tank.....not in the crankcase but all the way down to the tank. That line will stretch plenty enough to get the filter on. I know it doesn't look like it but it will. Concerning your spring......they are very delicate and carb specific.....don't use one from another carb unless it's from a similar Tilly. I have never got a new spring in any carb kit.....OEM, NOS, or aftermarket. Someone may have lost or destroyed the original spring and just used what they had.