I know that.
Even 1C is high for some NiMh.
It is usually OK for the low MA batteries like 1.2A down but higher output cells start to get upset!!
I have some 2.5A sells I use in my Gato and if I use 2.5A or 1C they time out quick on a charge.
If I use say 500MA to charge them they will take the entire 2.5A charge.
Have a great X-Mas holiday my friend!! BD.