It's easy. Just remove old blades and install new blades. LOL. Here ya man. http://www.newarchery.com/downloads/file/4bfeed3e-a07d-49de-84ab-525aa5e5bbfe/ See. Just remove the old ones and put in the new ones. Just kidding with you.
its been some time since i posted this, but i did get the 2 screws out of my NAP blood runner 2 blade, i do have to say you need a small flat head screw driver, and i was dissapoited to see that one of them was seesed and would not remove, i sent a message to NAP and i yet to have a return, im not sure its worth to shoot 40 dollar BHs if i cant replace the blades because the screws wont come out, i guess i will see how well they preform this season, also while i was shoot "my new target BH" go figure i noticed a little whistle when they shot, is this going to tell the deer, hey an arrow is flying at you run away.
I had the same whistle with the two blades I bought. Don't know if it will spook them or not, but I'd rather not worry about it. I got rid of them, I've decided I'm going with slick tricks for my first season. Also, I'm with you about replacing the blades. If the screws won't come out of one, they'll probably do the sane on most others you buy.
I have had no problems replacing any of mine.. I got one of those eyeglass pepair kits and used that screw driver and worked great.. They do whistle when shot but that being said not one deer has jumped the string because of it and all have died fast..
I had the whistle with the blood runners and the changing of blades was hard. I to had one seize up. I shot them all last year and decided they would not get another season. Micro screwdriver and a good rest or vice to hold them. Mine were in supper tight. I had just as soon shoot a fixed blade as use them.
