I just placed some weights within the cowl to help with cg. The weights encircle my brushless leaving about a quarter inch all the way around. Do i need to worry about the metal being in such close vicinity? i have no way to clock rpms to see if this is effecting run speed. The metal weights are indeed magnetic.

I don; think so but what strength are the magnets?. If you need that many.. .is there anything you can with do by moving components around . servos.. battery, recvr, etc.. It seems like a lot of weight to add to the nose. Do you have a gram and or oz. scale, etc to see how much you added

Why magnets? I would consider using something else. I would not like magnets surrounding my motor. If the outer can of the brushless is all aluminum it shouldn't be a problem, but if there is any metal in the can it could cause some lose of efficiency.

thanks for the input gentleman, i scrapped the magnents and went with good old fashioned lead weights.  CG is correct now.  The battery and esc are as far forward as possible. The reciever is under the canopy hatch (when i had it too close to the esc my throttle was inconsistant.)  I had to add a full 2.5 ounces of weight to the nose.  I could move the rear servos to the front and run pushrods but other than that i dont know any other way to add less weight.  this is a simple ARF kiti picked up from general hobby. extra 300L with a 36 inch wingspan.  at first i had a 400 outrunner but switched to a 450 to try and add weight... the kit was originally developed for nitro engines.  I guess what my question is.. is.. is it normal to have to add so much weight when doing a conversion??  annnnnd  would it be better for me to run a heavier prop of the same size?  or would that effect the engines performance to much?  

You never know what you're going to have with a conversion, but it doesn't sound odd to me that you'd be tail heavy when converting from glow to electric. After all, the motor is lighter than a glow engine and you have that heavy battery that you can't put on the nose. If by a heavier prop you mean going to a glow prop instead of electric, don't. That will noticeably hurt your efficiency. A weighted spinner could help a bit by putting the weight farther out forward, assuming you can get one for that motor.