The above statement, which is quoted from the FAQ on Futaba's website, http://www.futaba-rc.com would say to me that the circuits are not capable of being tuned that far.

How much is the cost of a model and the time to build it compared with purchasing the proper equipment. If its a foamy park flyer or combat plane than you can fix with packing tape, then hey go for it.

If its a scale ship or a helicopter or something you have a lot of time or money in, do yourself a favor and get the right equipment.