Move 2 UIImageview and repeating

Hey guys, I am new to code :) but not exactly that much new coz My first app is getting to be done to post to appstore :) Just little problem Using x-code and UIKit, I want to repeat 2 images for background of my app. I used a cadisplaylink timer to move them, and it is working, after the image1 goes offscreen, I remake it in new position and it is positioned right next to image2 but after 3 or 4 time of positioning, the images start to have distance between each other.How can I have them stick together again? if (bGround1.frame.origin.x <= -viewWidth) { bGround1.frame = CGRectMake (viewWidth, 0, bGround1.frame.size.width, bGround1.frame.size.height);} if (bGround2.frame.origin.x <= -viewWidth) { bGround2.frame = CGRectMake (viewWidth, 0, bGround2.frame.size.width, bGround2.frame.size.height);} Image link : http://i.stack.imgur.com/B72UY.png Plz tell me ifmore details are needed. Thanks for any help :)

Move 2 UIImageview and repeating
 
 
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