My dad bought "our" 1969 1750 GTV new and, for at least the past 35 years, it has had a pronounced lean toward the driver's side (the RHS facing the vehicle sits lower than the opposite side). The lean persists despite the replacement of the original springs with performance springs all around, one goal of which was to eliminate the imbalance in stance. The passenger's side (on which side the gas tank also resides) continues to sit at least an inch higher than the driver's side by reference to the height of the wheel arches relative to the top of the tires. What more can be done to achieve a more even/balanced stance? "Cutting" the springs (on the passenger's side) seems not to be a recommended/prudent option. Is there, then, for example, a lower (racing?) spring option I could employ on the passenger's side to bring the car into balance? Advise, please.