What's the distance you need to make up?
That is...what's the difference b/t the top tube and the arms of your Saris Rack?

Also..Are you handy? Do you have anyone in your life who is handy with a drill and/or saw? You could probably make something with a few 2" by 4"s. It wouldn't have to be pretty...just useful.

But if the distance is excessive b/t the bike and the arms, you'd have to build a loooong ramp to get the bike up close to the rack (handy would come in for building joints that would fold/unfold for storage). Otherwise, you'd have to do SOME lifting.