Talk Morgan Forums Morgan Sports Cars Morgan Plus Four, Supersport & Plus Six (CX & CXV Generation Vehicles) Plus Fours suspension

May have been asked before, but has anyone got information on a suspension upgrade for the Plus Four? I note Lebrands do coilover shocks for the Plus Six. I find the suspension of my Plus Four bouncy (as it is light) and it crashes a bit over potholes & bumps. I suppose any upgrade would invalidate the warranty.