If you are taking the bolts out then you really need to reseal them, you can buy the seat which is called Lock Tight and use this, you will also need to find out the torque settings for each bolt, this is a delicate job, the bolts are really easy to over tighten and then they will snap. Are you using brand new bolts or cleaning the old ones back up?
You should be able to just take one bolt out at a time if you are replacing them, just make sure you clean the hole as best you can, the thread on the bolts (old ones if you are using these) are really clean, use lock tight to help sercure the bolt once in, use the correct torque setting for each bolt and dont over tighten them.
