i am currently coding my strategy using the interactive brokers API. All of my backtesting has been done using historical data. as a result my system does not perform nearly as well with live "request market data" data (the two sets of data, though similar, are NOT the same). problem is that IB apparently restricts access to historical data through the API to 60 requests in any 10 minute period. this restriction is playing havoc with my automation efforts. is there any way around this? can I pay for the privilege of being able to make unlimited historical data requests?