125-200cc Wr125 06 tuning queries

Afeter reading various posts I have some queries if you dont mind - my first post so please be nice..

I believe my bike is running a bit lean of the bottom put has a good top end.
How do you adjust the needle height ? It seems to be all sealed
It has a 10 pilot jet 400 main jet. Ive heard people say they have a 30pilot ( richer ) which a cr has would this be worth trying ?

For a hot climate or hot day would you need to increase air?

Whats a power now carby mod?

How do you adjust the reed valves for more low end?
Has anyone tried an extra gasket to increase torque
Any help would be appreciated

Thanks
Ashley

25 pilot
stock WR needle on the 5th clip from the top
370 main

This setup worked great for me at 1000 ft ASL.

Thanks I will try a richer pilot jet

needle level 5 is the richest - I am not sure how to even adjust the needle
I think I am in a warmer climate so may not want quite as rich
Anyone played with the slide angle?

Not sure about the WR jetting because I have never owned one but the Power Now is a must. I just reinstalled mine after not having it on for one race, very noticeable difference.

On my CR I had a 40 pilot (real lean @ 35 deg.) airscrew out only 3/4. So I just switched to a 45 pilot, needle 4th from top, 390 main, and fine tune with airscrew starting at 1 1/2 turns out 600 ASL. Thats what I'm taking to Georgia National Enduro, hope it works.