A warming thought from Steve L.
Nugatory, good buddy.
Need to make 4 steel brackets go from gear attach out clear of fiberglass, make sled out of 2×4′s. Remove 4 landing gear bolts and drop helo and bolt onto 2×4 sled. Should reduce height by at least 15 inches to about 7 feet.
If still need more, fab sled to tilt helo 20 degrees to the side andget 6 more inches – should fit under 6 foot 6 in. Can still work on everything – some things are easier to reach, then put gear back in Spring.
How tall is your garage anyways?