I recently acquired an SB2 Ultra in 243 Win and had issues with failure to eject. The FAQ posts are quite interesting. I called the factory to order replacements for the ejector parts and was told those were not available from the factory, but, since I was not the first to have that problem, they offered the extractor, its leaf spring, and a "cam extractor". Alas, my underlug has only three holes, not the six evident in the FAQ photos. It appears that the "cam extractor" needs two pins in the underlug to function properly.
a. Am I correct in understanding that to use these parts supplied by the factory, I will have to hog out the slot as described in the FAQs to provide space for the cam and also drill at least the one additional hole adjacent to the larger hole to act as a pivot for the cam?
b. Are one or both of the paired holes in the center of the underlug in the FAQs required to use only the extractor, or can they be omitted?
c. Is the Handi-Rifle exploded view from the factory a brilliant depiction of the complete assembly or a hopelessly confusing image having little to do with reality?
d. Is the leaf spring the only spring required to make the extractor function properly?
e. Are dimensions available for locating the required hole pattern?
Your reply is eagerly awaited.