Fantastic, Reggie, that's some real progress!

Don't try to get the tail belt too tight- it should be tight enough that with moderate pressure on one side of the belt, it won't touch the other side, as shown in the manual- and that's moderate pressure. If you get it too tight then it will put far too much drag on the heli.

The throttle curve I'd try belling up- something like 0-40-75-88-100, but you need to check the blade pitch as well- getting the heli set up without a pitch gauge and tachometer is difficult. A good starting setup has your normal mode with about -2 degrees to +9 degrees pitch, with a curve resembling 44-47-50-75-100. The idea there is to get the head speed up and keep it relatively constant. The higher head speed may also help settle down your tail.

Glad you're getting there- the first little bit is the hardest with helis .