I know what your problem is but I won't tell you how to adjust your carb. I think its best for you to learn by experimenting a little to get it set just right.

note where your low end needle setting is and make a small adjustment in one direction. If problem gets worse then adjust in the other direction. Don't be afraid to make multiple adjustments in the direction that yields the improved performance you seak. Be patient and take your time. I have had some very troublesome engines and carbs that were very finnicky and took as many as a dozen adjustments to dial the carb in.

Good luck, you'll do fine.

PS Remember low end needle affects idle and transition to full throttle. It is generally effective at 1/2 throttle and below operation. High end needle affects 1/2 throttle to wide open throttle and is adjusted at wide open throttle to give a slightly rich mixture so engine doesn't overheat.