Need clean source code from NinjaTrader 8 Strategy DLL (Trading123)

I have a compiled NinjaTrader 8 strategy DLL (name: Trading123) that was provided to me as a third-party compiled assembly. I need the full C# source code extracted so I can debug and add new features... (Budget: $30 - $250 USD, Jobs: .NET, NinjaTrader, Reverse Engineering)