Hello evreyone have been a IH combine operator for many years we bought two 2388 combines last year after harvest and are using them now . More or less the same combine as a 1688 exept a nicer cab and maybe a little more power the thing i noticed when thrashing flax was that it leaked out the small inspection door for getting a sample when the hopper was nearly full . I fixed by taping a piece of sheet metal about two inches high across the bottom of the opening but still leaking a bit will have to make a door i guess . Photos attached