You are looking at a total spend of $150 Euro total for things that might work.
A stock Mikcarb is about $100 plus any additional jets, the pre-sorted Amal from H's about $200.
For about $50 Euro more than you are thinking of spending/ have spent for things that might work you can get something that does work. Save up coffee money for a month and get a known good part.
There's nothing stopping you from selling the carb you purchased that didn't work for you. It'll defray the total cost, and you can write it off as a "learning experience".
Just buy the part you need that actually works and go riding. The other option just creates misery, and life is way too short to be miserable.