I have an older 601. On landing it "slams" down on the nose wheel. On takeoff it takes a hard pull to get the nose up and then it over rotates causing an interesting series of gyrations. I had a post previously and a reply staTed they installed a longer nose wheel strut. I installed the Eggenfelner spring and it doesn't appear normal. Also, on landing and taxi the main gear feels very stiff. I ha…