Picked up new Irwin taps, which took about two seconds to cut the threads. The Harbor Freight ones are useless.
I tapped the two holes for the iflyrv10.com mod to the handle gear.
Then I had a problem with the handle not functioning properly. It turned out that the handle lever was rubbing against the opening in the handle. A little work with the lever on the scotch brite wheel and all is well.
I didn't take any photos since there wasn't much to take a picture. With the learning curve on the right door, the left one should be pretty easy.