Achy joints is a side.... upping your dose, you will more than likely see some Major sides, so if it is something you are prepared for, then up the dosage. But if you are doing great at what you got, why up it? Leave it alone, and grow nicely with minimal sides.
Your aware of the sides right? I'm not dogging you in anyway, I myself have done 50mg ed of winny..... but I also have some permanent sides. Just dont throw caution to the wind.....so to speak.