Hey guys need a little advise. I'm getting ready to remove my rear lower flex arms to replace the bushings that are worn out. I don't have them off yet, so I'm wondering how they actually adjust for length? I probably won't need to make an adjustment but cannot figure out just by looking at them how they adjust. They look like they are two tubes that slide together. I searched the Tera flex site but cannot find anything. This is a 4 inch lift put on in 2005 on my 03 TJ rubicon. Thanks to all. Really appreciate advice.