[piecesparts]

For those, I have a ground down combination end wrench. I grind down the boxed end to make it thin,s o that I can use it, then when the bolt is loose, I use the open end to take the bolt out.

Put teflon tape on those bolts and they will turn easier, when you want them to and they will not back out, after you tighten them. It works great and once set, you will not have to retighten them on a regular basis.