I think you are speaking from frustration. There are inexpensive strong motors on the market.

I fly Dualsky 6355 motors and the one that flies on 10S is 578 grams and the motor costs $225. It will be back at 2DogRC in mid april i believe.

Replacing the prop is a purchase that keeps on giving no matter what you fly as long as you dont break it.

Are you using the Great planes lightened back plate spinner? it is 12 dollars, you trim of the front for additional cooling and loose a bit more weight.

Honestly ... if you are going to be moving to masters and you have been flying this airframe for 2 years, it may be time to purchase a new one and you can make the changes in the new airframe and pay for them by selling the old one.

Good Luck, feel free to contact me if you need any other assistance.

Chuck