69 Barracuda Fastback Fuel Tank Install Help Needed.

I raised the tank with lubed grommet and had my helper slip the tube in with (seal slid up)all the way then raised the tank the rest way and strapped it! Afterwards I slipped the tube up to meet the quarter. I had heard stories of folks messing up the quarter panel trying to install with the tube mounted. There is too little room to install it afterward in my opinion.