Lubing new rings. pistons skirts and cylinder walls

[Deye76]

"climbing around compressors and turbines has a millwright"

I understand, worked out of Local 1102 Michigan for a while.

[JSD]

If the piston uses a support rail your screwed trying to load from the top. Bottom loading is a must. Most >4 3/8" stroke engines use a support rail. My CP 4.125" custom pistons are designed to not need one. I am not a faan of support rails for other reasons than ease of installation.
Most shops including the OEM and S&S put a minimal chamfer on top when boring and honing for obvious reasons, it is a carbon trap and exposes the piston crevice space. The spigot bottoms bored and honed here have a generous chamfer to help load the rings plus prevent a rash on the skirt on turn over.