So you need extra washers behind the castle nuts on the engine and on the engine/firewall mount as well. This aligns the cotter pin holes correctly. The engine required 3 on the bottom mounts and 2 on the upper mounts. The Dynafocal mount to the firewall required 1 under the bolt heads and 2 under the castle nuts to align correctly. I torqued the firewall bolts individually, from 165 to 185 inch lbs to get the cotter pin holes lined up with the castle nuts. I wrote the torque on each nut as I finished them. Allowable torque range for these AN6 bolts is 160 to 190 inch lbs. They replaced the ACE hardware working bolts I had on the firewall for a long time. Done. Still have to final torque the AN7 engine bolts and cotter pin them. They get 38.5 to 41.7 FOOT lbs.
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