Thanks for the note. The first thing I did today is place a gas additiive to make sure there is no water in that tank, pretty new boat but I use all marine gas. I will push up the idle just a bit also to see how that helps. Hopefully between cleaning up the gas if in fact it needs it, and the idle hopefully that will help. I do notice after warm up, the one engine is ideling flat, the other with the stall problem (only after backing out for the first time) does have a slight pulse in the idle, so thats one reason I put the gas additive.
Thanks again!