Originally Posted by bayall
I can't get them the ridht length I eather can't keep my feet in or my knees and upper leg tense up and I can't post becase it hurts what do I do?!
It's not the stirrups' fault that you can't keep your feet in them or that you tense up.
1. Get your legs in shape.
2. You need to learn to relax and stop gripping with your legs.
3. Learn how to sit on the saddle correctly so that your weight is on your seatbones.
Once you do those three things, life will be a lot easier.
In order to get 1-3 done as quickly as possible, pay a good instructor to help you.