Carl,
I didn't read the installation instructions closely enough as well as rushing the job. I made the mistake of putting on the unit before I checked the clearance for the temp sender (as instructed) and I didn't want to remove and clean the new RTV sealant.
The upper hose had to be replaced because it had the mid-hose mount for the temperature sending probe. At least it went on the first time. Normally it takes me three attempts before I get it right.