I think that my scissor lift is the same as yours, although it’s marketed under a different name here in Canada.
To get my wheels to not touch the ramps, I had to find just the right spot to place the car, basicly I measured that the rim centres were equidistant to the ramp.
From the pics below, you can see that I had to get the bottom of the car at least 4” above the ramp. To achieve this, I use some 18X12 boards front and back to raise my car enough slide some pucks and spacers in between.
BTW, I already have hokey pucks bolted onto the body so I’m putting together some 2X4 crossmember with additional pucks strategically placed which will make alignment even easier.
Hope this helps.
Cheer,
Johan