Difficulty with oil pan removal

[oriondal]

I recently acquired a 1931 A that has a big oil leak from the drain behind the rear main. In dropping the oil pan, I was unable to lower it out as the forward lip is a little forward of the front crossmember. In searching the forum for a solution I came across this from ten years ago: (removal is simple unless) the engine has worked too far forward and the front cross member interferes with the lip on the pan. This seems to be the case with my car. What is the solution to fix this? Could it also be the cause of my leak?