I built a platfrom for the cabin to sit on so the keel would roll right into it without having a lot of helpers hold it while the cabin attachment brackets were fited on.
I glued grommet material to the slot where the keel enters the cabin.
I attached the fuel cross-over hoses with worm clamps instead of the factory clamps. I think it will be easier in the future when the hoses need to be replaced.
I used the magnolia construction glue to attach the spar stub into the new SparrowHawk III tail.