re hst servicing mission scheduled for days in article rd g ckb access digex net prb access digex com pat writes my guess is why bother with usingthe shuttle to reboost why not grapple do all said fixes bolt a small liquid fueled thruster module to hst then let it make the re boost it has to be cheaper on mass then usingthe shuttle as a tug that way now that they are going to need at least spacewalks then they can carry an edo pallet and sit on station and even maybe do the solar array tilt motor fix as herny pointed out you have to develop the thruster also while much lighter you still have to lift the mass of the thruster to orbit and then the thruster lifts its own weight into a higher orbit and you take up room in the payload bay pat
