just buy a different asa that allows you to slide it into different positions. eg CP / DYE/ hybrid etc
that will solve the problem of the oops supplied sitting backwards by 1 inch on the grip frame.
tbh its not worth hacking the star frame apart imho, resale being what it is.
fwiw also if you get some suitable screws you can attach whatever drop you would want on it, as star frame is drilled for screw mounts...
if you sell the oops let me know
ta