I have taken 2 Nissan KPH02A-25V trucks in trade. They both are equipped with 2 stage masts; one has a 2W330 mast and the other has 2H330 mast. The 2H330 mast has more freelift and has 2 stops bolted onto the bottom of the outer channel that prevent the inner channel from dropping below the outer channel. The 2W330 is not equipped with these stops and never was. The inner channel on the 2W330 mast hangs well below the outer channel. I have contacted several Nissan dealers to see what stops the inner channel and they say that there must be spacers missing in the lift cylinders, however the spacers go on top of the rod, not on the bottom of the rod. Can anybody tell me what stops the inner channel from dropping below the outer channel on this mast?