Today I made the F-1259M Fuel Return Line Fwd. I can't get the hang of putting the bends in the exact places on the fuel line and have to make corrections. Did the same mistake of flaring the aft end before inserting the nut and sleeve and had to cut the flared end and then flare it again after, this time, putting a nut and sleeve. Had some difficulty putting the screw through the cushioned clamp and getting it to "bite" the threads in the nutplate. I was worried that I may have riveted the wrong nutplate to the firewall. After several tries and getting a lot of scratches on my forearms, I was able to get the screw to bite and install the clamp. This completes Section 28.