1)We don’t know if your stirrups are even either.
Now look if they are totally wonky with more than a hole in the difference of course we know but if you are doing the ‘are my stirrups even’ bum shuffle while listing your saddle from side to side like a drunk on a boat then no, we don’t know if stirrup A is 0.25cm shorter or longer than stirrup B! Plus if you have insisted on turning in eleventy million times in one session to ponder this great life mystery, at that point we don’t care.
I have a fool proof cure for the stirrup conundrum that hasn’t failed me yet. Turn in and halt. Ensure saddle sits correctly and centred on the horse (get off and fix if it isn’t). Remove feet from stirrups. Bring each knee up as high as you can and then your legs out as far as you can and repeat. Now that you are sat in the middle of the saddle, without wiggling or shuffling just put your feet into the stirrups and you will know which is longer. Fix that one and away you go. Your welcome.