I had a 151 that had holz scratchers. With a 144 you might want to remove the two rear bogie wheels that sit just in front of the rear idlers. The hi- faxes will out live you, so the hi fax wear without all of your bogie wheels, is not an issue. You want to be able to hook them over the slide rails where the slide rails are shortest. You can slide the front hook in behind the front pair of bogie wheels, if need be.