Does anyone collect or know about the different lettered Ewok hoods.

From my wheeling and dealing I've ended up with numerous lettered Wicket and Chirpa hoods.

E,F,G,H Wicket

A,E Chirpa

Do they have any significance, specific origin or rarity?
How many letters are there?

Another hood query is about a solid Rancor Keeper hood. The TIG guide shows only one hood and presume this is the common bendy version.

Was there a solid Hood or is this another that's been in the oven? It doesn't appear any different other than it's rigidity.

The soft Rancor keeper hood is found on Taiwan figures. The hard hood is found on no coo figures.   

There is a thread somewhere discussing lettered Chirpa hoods. I'll try to find it. The letters denote what mold the hood came from for quality control (rather like the lettered sabers).

Here's the thread about the Chirpa hoods: https://www.imperialgunneryforum.com/t3854-chief-chirpa-hood-variants-variations?highlight=chief+chirpa+hood

And this one relates to Logray: https://www.imperialgunneryforum.com/t3750-logray-head-dress-question?highlight=logray+hood

Perfect. Thanks for the links.   

No problem Andrew, I'm happy to help.