Boolean issues with complex object

Hello guys, i need a lot of help from you because i am trying to carve a name on a object but i think that thanks to the complexity of the letter is not working properly so i attached some screenshots so you can see what i am trying to do and also to check my issue. I hope you can help me.

Here is with the boolean applied bot only worked on some places.

Also change depending on the placement of the letters. Please if you need more info abut my issue just tell me and ill be more than glad to answer. I need this to work and also if you know a better or easier way to do this them please let me know.