Hello. I am in the process of replacing the rear lift cylinder due to excessive scratches in the cylinder lining and piston. When I reassemble the lift, I was considering trying to calibrate the position/draft control. However the manual I have keeps referring to use Massey Ferguson special tool#... for this and special Massey Ferguson wedge# for that.... I have no idea what these are and I"am not likely to get ahold of these tools. Can someone describe to me if these tools can simply be made...are they simply small pieces of metal of a certain thickness & dimension??? Any help or suggestions would definitely be appreciated. Thank you.