Are the rear tyres old and hardened, are the pressures correct ? With the SSL rear set up correctly you shouldn't get tramp
Agree - I have SSL back and front on my Roadster and no axle tramp. It should be checked regularly (each service) to ensure nothing has worked loose especially the axle clamps. The picture earlier in the thread is the latest version of SSL’s rear suspension. Yours might be the earlier version with axle clamps made of pressed steel rather than machined billets. Also worth getting it checked/set up by someone who knows what good feels like. Williams did mine and it made all the difference to the drive.