Sofa bed removal from slide out. Ran into an issue

I don't know about your specific model, but that "base" could be used as a chase for water, electric, gas, etc. lines. Removing it may just expose what is under it making it just as difficult to put the recliner. I would check under the "base" before removing it.

If the "base" is hiding lines, would it be possible to extend the base to the end of the slide and sit the recliner on it?

-Michael