Did you know you can get a +10 Armor in 10 or less Spros?
Heres How:
Buy like 50 Scroll Of Smelting (High) 100% success rate and you can get it manually from lv 1-7 without spros, or Bobo!
Once you get it to +7, use BoBo to finish it in safe upgrade. I hope this helped some people...