Is there an optimal distance from the pressure tank to install the Tee joining the line from the pump, line to the house and line to the pressure tank? We have a convertible jet pump with an injector bringing water from an 82 ft well. The line from the well comes up into the basement, the pump and pressure tank are within 8 feet of the well line. Currently the line comes out of the pump about 16" to a Tee with about a 24" line going to the pressure tank. All of this is at floor level with the house supply line running up the wall to the ceiling directly above.
The optimal distance is as close to the house feed line as possible. But "less than optimal" may not be enough difference to notice, particularly if the tank tee line is adequately large diameter. Are you experiencing a problem related to the pressure tank?
I'd personally be penciling in "replace with a submersible pump" for future water system considerations. Jet pumps are a technology whose time has come and gone, IMHO. They waste a lot of power, for one thing.