Any garage door repairman will be able to adjust your spring tension and motor travel to bring the door out of the opening. Not a job for an inexperienced person. There is a LOT of energy wound up in that spring! No additional parts should be required. Pushing up on the door could cause the cables to unwind from the spools causing the door to come crashing down or twisting in the opening. (21 years in that business, saw a lot of messes).
Also, I once owned a boat on a trailer that was too long for the garage. There was a simple fix that involved a good welding shop cutting the tongue, installing a hinge that allowed the cut-off to swing to the left when parked then come back solidly pinned in place for towing down the road.
I have not checked but I would bet you could find that mod on You-tube.
An idea to explore!
2001 Ford F-350 Super Duty CC Dually, 7.3 Diesel
2013 832IKBS Flagstaff Classic Ultra Lite, Hensley Arrow Hitch, Carlisle tires
2016 days camped....211, it ain't over yet!
On the road to ALASKA May 6, home Sept. 13, 2016. 23 states, 3 Canadian Provinces, up to the Arctic Circle, 17,300 miles, 131 days on the road. 1 flat tire, 4 oil changes. What a beautiful trip!