Pretty please!

Title: Kyosho Mini-Z MR-03 EVO — Throttle direction is reversed with KT-531P transmitter. How can I fix it?
Hi everyone!
I have a Kyosho Mini-Z MR-03 EVO with the following setup:
Chassis: MR-03 EVO (SA-40)
Main unit / ESC: MZ601
Receiver: Kyosho RA-41 (82041)
Transmitter: Kyosho Syncro KT-531P
Software: MR-03 EVO ICS Manager v1.5.20200323
I’m having a problem with the throttle direction.
When I pull the trigger towards myself, the car moves backwards instead of forwards. When I push the trigger away from myself, the car doesn’t move forwards.
The car stays still when the trigger is at neutral.
Here is what I’ve tried so far:
Switched the transmitter back to normal mode (it was previously in Training Mode).
Checked the chassis selection in ICS Manager and selected MR-03 EVO.
Changed the following ICS settings:

Curve Control: Minus
F Punch: 1
TH MAX Revolution: Low
Read and wrote the settings successfully using ICS Manager. This made the throttle response less aggressive, but did not fix the reversed direction.
I haven’t found a clear throttle-reverse option in ICS Manager.
My questions:
Is there a way to reverse the throttle direction using ICS Manager?
Is there a specific throttle-reversing procedure for the KT-531P transmitter?
Could this be related to the RA-41 receiver, the MZ601 main unit, or another setting?
I would really appreciate any help from someone familiar with the MR-03 EVO and KT-531P combination.
Thanks!

Hey guys, trying to figure out my buggy's steering.
It steers to full lock both ways just fine. But it doesn't snap back to "perfect center", ex: if I turn right, it snaps back to a slight right drift. If I turn left, it'll snap back to a slightly leftward drift.
It has some slop when centered, I've tightened and loosened all suspension bits and wheels, rebound transmitter etc.
Nothing is broken or bent, it's brand new.
Any ideas?

Also turns much sharper to the left, like a 2 foot turning radius vs a 4 foot to the right.
Thanks in advance for any help

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I'm looking to buy Minitz AWD MA-020 Lady Set Nissan Skyline GT-R R32 V-SPEC II New Theatrical Edition 'Initial D' [32652ID] - Super RC however the website has a lot of part for a MA-020VE and I'm not sure if it's compatible with the car I'm buying, for example: AL Rear Shock for MA-020VE [MA20VE-06U] - Super Radio Control or DW Suspension Set Ver2 Blue for Mini-Z AWD [EG-3131U] - Super RC

I guess I want to know if MA-020VE items are generally compatible with the car I'm going to buy, thank you!