In 2005 there were six leaves on the two Seaters. By 2011 there were four, and a batch of below par springs, which I had on Mr Bumble. I changed to Mulfab four seater four leaf springs and they transformed the ride.
Ps. Nice sketches.
DaveW '05 Red Roadster S1 '16 Yellow (Not the only) Narrow AR GDI Plus 4