new bolts is because they normally have that blue stuff on them to stop them coming loose. What's it called?!
Yep blue thread lock so it comes pre done so that helps with the stupid HS&E rules I guess.
Clean it and put your own on as has been said.
Works for me, did my prop before finding out they recommended new bolts no problems since, so I am happy it’s some stupid cya statement in the manual.
J.