I'm glad that one of my pictures showed you how it looks. Let me know if you need a closer look at it.
My fillet base is 4 7/8" (124 mm) from the wing saddle out. The plastic parts may be sized to the kit Adrian sells now and not to the plans you have. You will need to trim the end of the plastic piece flush to the end of your fillet base. It should still look good.
Mike