Replace the radiator now or suffer the consequences-ask me how I know.
If you need one, contact me, I have them for what I consider to be a reasonable price.
I have found that locally, I can buy new radiators for less than what the shop wants to recore. I'm not certain that rodding is an effective method as you still have ten year-old tanks and core. We find that often what appears to be a good radiator shows evidence of slow leaks upon removal.
PT