I replaced the long bolts on the brake pedals. I liked the idea of using 1 long bolt rather than 2 short bolts in each pedal. The pedals work a zillion times better. BUT... I ordered the 60 length based on other builder sites. They take a pile of washers to work correctly. I ordered the CORRECT length from Aircraft Spruce. (AN3-56 BOLT DRILLED) I also ordered the drilled bolts. They are going to be perfect