Rat, with regards to your 75mhz radios on the tammy's. You can very easily wire in a momentary push button to fire the main gun and no longer use the trim up/stick up function. Just take the back off the TX and solder in the button to the trim pot/board area of that channel. You'll also have to drill out a spot on the TX to mount the button. Not much work and makes battling SO much easier.