Ferrea valves highly recommenmds NOT using springs with dampers with Ti retainers as they claim it'll shred them leading to catastrophic engine failure. It might be a good idea to look into this...protect your investment.

I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.
Thomas Jefferson

Freedom must be repurchased by every new generation
General Daniel Jones, WW2 Tuskegee Airmen