On sidestand is fine. Do one bolt at a time. The bolts do not support the bike. They screw into studs that support the shocks. The bolts just keep the shocks from coming off the studs. Be sure to tighten the bolts back to 27nm, and use some blue (medium strength, removeable) thread locker. That is, if you do not need to remove the studs to put on the seat rail.
