Eugene, invest in a cheap plastic transmission filling funnel and it will go in past the "trap door" you speak of. It is almost two feet long and is shaped sorta half moon. It tapers from a big hole at the top to a little hole at the end. Saw the small end off just below where it goes thru the door. The half moon shape allows the funnel top to end up in the "up" position. Shove it in the hole with a little pressure and the funnel will end up free standing and you won't have to hold it while you pour. I hope this makes sense. I never could say anything in a few words. I envy people that can. <img src="/images/graemlins/smile.gif" alt="" />