Dam serpentine belt

[hardhattg]

I know this has been discussed have read all the threads just checking is any new tricks or advice to getting this serpentine belt on . Don?t want to change pulleys or belt size if can help it 2k mile 1990 . Tried installing a new replacement belt for many hours then gave up and tried putting old belt back on and can?t even get that one back on and I know that one fits . The tensioner and a completely retracted and trying to get over the back of water pump pulley last but just can?t get any leverage to pull it on it?s so tight ?

Can anyone offer any advice ?

Thanks