There are so many details and variences with setting up a rear guard, a bit time consuming not unlike the timing chest. At any rate, it is a process and it needs to be followed unless you want a miriad of elongated holes......... I won't go into minor detail, but before you go too far, it is important to install the rear wheel and center everything........2 of the last sets I installed the rear lifting handle was not quite square, either slightly twisted or offset to one side.........This seems ok at first, but it makes the alignment of the rear flap and stand an extra problem........To start with the forward guard section, align and drill off the front hinge center bolt so about 2mm of guard protrudes behind the hinge rear face.......This will give you some material to play with later when the 2 guard sections need to marry up once the guard flap is fully down and the rear stand tommy bar is tightened. Do use the correct tall dome alloy rivets either side of this bolt, they are soft and easy to set........Do not use american AN aircraft rivets, their heads are not as tall, and they are much harder, therefore more difficult to set........make up a dolly using the end of a piece of good hardwood, or the end of a piece of steel or alloy bar.......using a 1/4" drill bit, linish the shape of the cutting edge to a dome shape and use this to cut the same shape into the corner of the piece of wood, steel, whatever........It needs to be close to the corner or other wise it will hit the head of the central bolt........it is good to do this with a second set of hands to support the inverted guard/hinge on the dolly held in the vice, whilst you set the rivets with punch and hammer........no need for heavy hits, the rivets are soft. The main guard is not too bad to install, the rear flap takes a bit more effort..........Just quickly.... once the main guard is in place, then you want the rear wheel in and the rear stand in place and ready to lift up to possition........Once the wheel is in you will quickly see if the guard/hinge is central to the wheel.........Do this before you install the main guard side braces, as once these are in place it will be very difficult to move the assembly from left to right or vice versa if needed.........Also as Chankly mentioned, the possition of these inter struts is important.......they do not sit as equal front to rear as you might think, needing to sit further aft, as this aligns the rear brake switch vs spring and if the stuts are too far forward, this then makes the spring pull the switch slide down too much at the front.........I'll leave it at that for now.