Yes the old springs had the flat profile secondary springs inside. Just like the new set has. I just wanted NEW springs because I didn't know the age or history of the old ones. Installed pressures were all over the place, all way too low. I could easily open the valves with my thumb. Maybe installed wrong or maybe a result of seats and valves wearing, or valves stretching...? I didn't care, everything is new now. Head had hardened seat inserts before so they just got machined true.
