When we had a manual, we commonly would extend it out to its minimum allow distance, determined by the upper arms. Don't think 2 feet will work, but maybe 5 feet.
Added thought, its been to many years since I had a manual awning. If you made a custom set of fixed length upper brackets, that could slip in along side the unused factor bracket mounts, you should be able to support the awning at 2 feet.
|