You did an awesome job! I have a very cute Blue sparkle but is missing the supersensitive system and that a lot to say...Im debating on cutting snare beds or just suffer her dissability for the rest of my life...I just dont have the earth to cut beds on such an unique drum..In my dreams I find the original system...But only in my dreams...
What do you mean by a supersensitive system? The fine strainer adjustment thingy? It should be very easy to recreate - it's basically just a screw with a hole and one wingnut.
If you know how to do it, I think cutting on an Amati snare shouldn't do much harm. If you ruin it, I can get you tons of others. Maybe not in Blue sparkle, tho - it's not very common around here.