Fortunately we made great time driving across country, and when we arrived at Timothy's, after stopping at the monastery and dropping off the arch rocks, I had three whole days to put everything together. The first day I went out alone to assemble the arch itself. While putting the bases in exact position, I noticed a surprising and alarming lack of friction between the base granites and the ground slab provided by the monastery. But the arch went up more smoothly than I expected; after the initial placing of the keystone, I had to take off just one voussoir on either side and make a minor adjustment in mortar density to get a perfect fit, and once again the scaffold slid right out. That day I also set the first several stones for the outside columns.