I could be wrong, not the first time......
I take it you have 2 short bolts, one for each side...... Put one of them back in, but only half way. Now tap the head with a hammer, sharply. See if the shaft will start to slide out the other side. I had an old trike with a shaft held in place by 2 short bolts. They only kept it located within the forks.....
By George, I think you've got it!!!!!!

for how much ?I did want to sell mine but shipping is the killer. They are heavy frames.