Ok, I screwed up. My 91 TR's major service was going smoothly. Valves were checked, belts and tensioners were changed. New cam cover gaskets were installed. Life was sweet. To completely reseal the cam boxes I removed the distributor base plates to change the distributor base gaskets. To remove the distributor base plates I needed to remove the distributor rotors. To ensure reassembly I took a picture of the location of each rotor. I then removed the three 7mm bolts which hold the rotors on and pulled the rotors. Hours went by, I was checking my work and decided that I would rotate the engine to check belt tension one last time before I snugged down the tensioners. Belts and tensioners are fine. Now which direction did those rotor arms face? Note to self - a picture may be worth 1000 words, but a small stripe of felt marker might be worth a few internet posts. Any idea how to figure this out without removing my cam covers again? Each rotor can face one of 3 ways, thus there is a 1 in 9 chance of getting it right.