What is your method for serp belt install?One thing I personally had a problem with was a non-Honda serpentine belt, believe it or not, it felt like it was a tad shorter and was a beach to install. So, I just get an OEM Honda serpentine belt since then and no issues at all.
Specific serp belt tool is a must have.
Cheap at harbor freight.
I usually do all pulleys including tensioner ...
While saving the PS pump for last after I move the tensioner and slip the belt on.