Hi Joe,
Not sure exactly what is going on except this is the second engine doing the same thing, has never been an issue with the 26 and as you know, it was not a problem for you until you replaced your module. Look at the pictures and notice the differences in the sensor and battery leads. Also look at the back of the module and note which model number is marked off and please report back. It would help if you could acurately check your timing with a degree wheel. If you don't know how or don't have a degree wheel go here,
http://www.ch-ignitions.com click on "Instructions" and then, "Installing and Operating...", scroll down about 3/4ths of the page you will find good directions on how to do it. There is also a link at the end for a degree wheel you can print out. Before you print it make sure you have the scaling turned off in the printer properties dialog box that pops up.