Although stuffing in the QSI Yb2Ti2O7 has been shown to play a vital role in the selection of a magnetic g.s., no study before 2012 probed the effects of B-site disorder in a QSI. In fact, the only study to address such disorder was performed on Tb2Sn2-xTixO7 (TSTO), showing that the solid solution produced a novel type of spin liquid. Although TSTO answered many questions, there remains an important question, is the effect of B-site disorder on a thermally isolated QSI the same? In fact, a study on Pr2-xBixRu2O7 (PBRO) may have already answered this question. Through inelastic work, van Duijn et al. hinted that the non-Kramers’ doublet had split into a continuum of singlet-singlet transitions. This behaviour would be consistent with the findings of the work on TSTO. but it should be noted that PRBO is not a QSI system with disorder being exclusively A-site. Instead, we propose to use Pr2Sn2-xTixO7, possessing a thermally isolated non-Kramers' doublet and exclusive B-site disorder. We propose to use D7 to detect the broad diffuse low |Q| magnetic features at mK temperatures, characteristic of the SL state that we suspect Pr2Sn2-xTixO7 possesses.