RE: Are these new arrows too short?
Actually they are still about an inch too long if you wanted them to AMO specs.
Your other ones are way too long unless they were a heavier spine than you needed. I shoot longer arrows than I need though, just to break the spine down of the arrows I want to shoot. Makes them a bit heavier as well which is ok with me.
What bow do you shoot, what draw length (measured not guessing), what draw weight (again measured) and what brand and size of arrow we talking about.
Most people shoot the same length arrow as their draw length is, makes it easier to remember that way. That's fine if they spine correctly.
No way to know if you have the correct length unless we know what they are and what you shoot. Spine is much more important than length.
Paul