War Castles

I tried to search and was unable to find anything, but there is a "Bug" that i think definitely needs tweaking.
If you are in a war, filling clan castles, and you have 35 spaces, (Let's say you want 1 balloon, and 1 golem).
If someone accidentally adds 2 balloons...the user cannot simply delete out 1 balloon for another player to add the golem.

Currently when we edit an army, if i want to delete 1 unit or 5 units, i am able to. Currently with clan castles, if you want to delete 1 archer, you have to delete them ALL and re-request. Please update this.

(If confused by the post, i'll add screen shots later).