with the traveler surface 16 of the base 12 the traveler surface 26 in an alternate embodiment can also have a slight oblique angle laterally the traveler 24 defines opposing slots 27 spaced apart from the traveler surface 26 and parallel to the longitudinal angled orientation of the traveler surface 26 a positioning hole 30 extends transverse through the traveler 24 between the slots 27 and the traveler surface 26 in the illustrated embodiment four positioning holes 30 are provided in spaced apart relation while the positioning holes 30 may be equally spaced in the illustrated embodiment the spacing is non uniform positioning holes 30 and 30 a are spaced 1 5 inches apart positioning holes 30 a and 30 b are spaced 1 25 inches apart and positioning holes 30 b and 30 c are spaced 0 75 inches apart the non uniform spacing facilitates selective positioning of the traveler 24 relative to the base 12 as discussed below a resilient pad 31 attaches such as with adhesive to an opposing surface of the traveler 24 the pad 31 provides a bearing surface to contact a lower surface of a cantilever toilet bowl a pair of opposing guiderails 32 interconnect the base 12 and the traveler 24 the guiderails 32 define a u shaped channel in cross sectional view having a pair of opposing legs 34 and a transverse bridge 36 between the legs the bridge 36 defines openings 37 that align with the openings 23 in.