Re-plumb the tank- start from basics, open the stopper, figure out which line goes into which and reassemble the tank. Use fresh tubing for the three connections

Check the LSN first- if it was moved while cleaning the engine, take it back to the factory position. I think its 1.5 turns out from fully closed with the carb fully closed but do check with the manual

Tune the HSN with the engine running at WOT starting with 3 turns out from fully closed and slowly close till it goes to max rpm. Then open back a 1/8th turn.

Another thing you can do is to check whether the black o-ring around the carb is still in place.

If you still have no response from the engine, problem lies elsewhere.

Ameyam