I assume you are running the stock Bird Seed battery? I am charging the first time at 100ma, the second charge at 700ma and all subsequent charges at 1-1.2A Discharge and recharge at 10ma every 10-20 cycles to keep the cells somewhat balanced.
I am using a Supernova 250S, so I can't tell you what seneitivity.
The celsl will come off a 1 or 1.2A charge pretty warm, but they will not be harmed. Just be sure to do the low rate charge at first and from time to time. The battery will perform better warm off a charger too.