i got my t belt replaced last week along with the water pump..i drove it a few days and noticed a clicking nosie coming from the cam gears area and thought it was the valves..it turns out the timing belt was loose..once it was tightened by the installer the sound went away..well its a week later and for some reason i believe its loose again..when i push on the belt on the right side of the cam gears it appears to be tight but on the left side i can push it about an inch..thats loose right? how did it become loose so fast? steps on tightening? thanks