hi.i,m trev from the isle of wight and have just re assembled a 1972 rickman police bike with a zundapp 125 engine.i rode one of these in the seventies but cant remember them being quite as noisy,there seems to be a lot of resonance from the finning .i have put rubber inserts between the fins to reduce this but it still seems to ´clang´ alot.is this normal?i expect the fibreglass legshields trap the noise a bit.