George,
By George, I think your right!
Just lost a rather lengthy reply to you, but the gist of it, is this.
Appears my engines and parts lists were all mixed up, apparently by the LHS I bought them from, but perhaps by Norvel. The engine I'm running had a Revlite parts list, and the box bar code was also for a Revlite engine, but the engine has the non-anodized cylinder/piston.
Checked the part numbers on all my parts lists, against the engines, and I think I've got it mostly sorted out.
"Revlite" indicates the newer cylinder/piston technology, as you correctly mentioned in your message.
Engine model numbers that appear on the parts lists, and some boxes, designate cylinder/piston type with an A or a B, and displacement, with a 4 or 6. However, an .049 that I bought when they first came out, has no model number at all. That, and the "A" series model numbers, are old technology cylinders.
A4 = .049
A6 = .061
A4R, or A6R = R/C carb.
B4, B4R, B6, or B6R = Revlite series with anodized cylinder/pistons.
AME is the Russian manufacturer, and is not mentioned on all the parts lists that I have. Norvel was the US importer, and that name appears on all the parts lists that came with my engines.
If that wasn't confusing enough, none of the six parts lists that I have, are the same!
Any corrections appreciated.
Bill