Is any one familiar with the 28mm pumper carbs that came on a 1980 z1R? and how do they compare with older kz and z1 carbs? I just bought a set and want to put them on my 77 kz 1000. I have the stock 26mm carbs. I am hopeing that the 1980 z1r carbs will be an improvement to my bike. What do you think?