Things you need to know.

When changing valve stem seals, pull the spark plug and instead of compressed air, shove a length of line into the cylinder. Tie a know in one end for easy retrieval. Then back the piston up to TDC for that cylinder. It will hold the valve closed with no worry about losing pressure or fishing for a valve.

If you have adjustable valvetrain, build a "bump button" by using a spring loaded normally open switch and two leads. Put clips on the lead ends and tap into the starter relay on the fender. Simply "bump" the engine around to the correct position to adjust the valves.

When using an oil pump primer shaft, be sure to wrap the shaft in electrical tape where it passes through the intermediate shaft bushing. This prevents wear and scuffing of the bushing.

When installing u joints, install so that the grease fitting will be under compression in the course of normal rotation. Also, when you finish pressing the u joint into the shaft and yoke, use a hammer and sharply smack (not tap, not pound) the shaft and yoke "ears" to relieve them after being pressed. This may be the difference between a retainer clip fitting or not being able to be installed.