hello friend, I've also had this problem with Mayflash .
Try to change my 's makeup , I think that resembles the original N64 touch pad
[HuiJia USB GamePad]
plugged = True
plugin = 2
AnalogDeadzone = 2096,2096
AnalogPeak = 21283,21283
Mempak switch =
Rumblepak switch =
mouse = False
A Button = button(1)
B Button = button(2)
C Button R = axis(3-)
C Button L = axis(3+)
C Button D = axis(2+)
C Button U = axis(2-)
DPad D = hat(0 Down)
DPad L = hat(0 Left)
DPad R = hat(0 Right)
DPad U = hat(0 Up)
L Trig = button(6)
R Trig = button(7)
Start = button(9)
X Axis = axis(0-,0+)
Y Axis = axis(1-,1+)
Z Trig = button(8)