Seat Mods -Vanderhall Venice
I made two modifications to my 2018 Vanderhall Venice to adjust the driver's seat, and allow the passenger seat to tilt.
First I wanted the driver's seat to tilt more forward (the back more upright). I loosened the four screws holding the seat down: loosening the front screws only a little, but loosening the rear two enough (without removing them) to slip a 1/2" spacer under the rail at each rear screw, then retighten all. This tilted it enough for me. If you want more tilt you would need longer rear screws, and a thicker spacer.
Second, after watching a Texas Oatmeal YouTube on how he modified his passenger seat to tilt forward on hinges, I did the same to mine. I did mine a little different, but basically the same. My hinge may have been different, or his screws located different, but I did not have to drill out the hinge to get the proper location. I had to by trial and error determine the right spacer under the rear of the seat so it would rest at the proper level. Also add a small cable or rope to anchor the seat so it can't be tilted forward enough to bump (crack) the windshield.
The hinge I used: from Amazon, Black Solo Seat Springs 3" for Harley & Custom Satin Black Barrel Springs (keep the hinges, toss the springs).