RE: TF 1/5 Scale P-51 ARF Assembly (1ST MISHAP!!!)
Value Floater,
My guess on the retracts is that it would depend in what part of the cycle they were in when the air supply was depleted....
Example: as in your case when the command to retract was given the tail wheel retract air cylinder being of smaller capacity would at least unlock first and may even fully retract. Now being out of air in the mains with their larger capacity they would stay in the pior state or extended.
If you pump up the air supply and give no command the mains may either ignore (if locked yet) or retract if unlocked.
Just my guess as I have been wrong before.
Am not farmilar with the DLE 55 or its condition, so would not venture an opinion as to the size prop to use.
Good Luck with the Doll !
Cheers