96 Honda Del Sol timing belt

Hello, I have almost rebuilt my Del Sol JDM replacement new suspension now douse to the wire. I replaced the timing belt for good measure and for the life of me I can’t keep tension in check I get it adjusted it becomes loose and and walks forward towards the timing cover? I am perplexed this isn’t my first belt change. I have watched the video and something is just not connecting. Thanks for all that you do with the videos it inspired me to take on this project.