Hello , I had a Barford Atom 15 out and working today for the first time in my hands after spending some time getting in back into shape. It has a cutterbar attachment and I found that the machine vibrated a lot particularly when not in work. Is this usual for a Barford Atom as I have no previous experience with them. I had to do some welding on the handle bars joints during refurbishment so I guess it was susceptible to vibration before my ownership. Does anyone else use one with a cutterbar?