I’m no artist... but roughly red line could be a secondary drawbar swinging roller around to a hitch point at the blue dot.Any pictures of what you are describing? I have rewelded the whole drawbar just now but am still undecided if it’s going to work. Now my longer drawbar will mean the roller will cut the corner even more! Some proper drawings or scale models would be the proper way to suss out all these niggles but where’s the fun in that! This way it’s a pleasant surprise when it works, and if it doesn’t the the grinder is back out.