EDIT: Just added a stretched version of the fender to hopefully help with clearance. I have not been able to test this model, so try at your own risk.
Finally! I've finished the Parking fender for the GotWay MSuper X. This is the same fender as my Standard MSuper X fender, except I added the parking feature to it. You can see how that works on the MSuper V3 here:
When you install this fender, you compress the two sides and get the clips into the wheel well. It will be hard to compress with the parking feature built in. Be sure to slide it all the way up against the top clips, and then the lower clips will snap into place above the LED cases.
IMPORTANT: After you've gotten it to click into place above the LED housings, be sure to press outwards on the fender to be sure the lower clips are as far outward as possible. This will make sure the tire does not rub. If your tire is rubbing, then check that the fender is all the way up and out.
NOTICE: If you'd like the NON Parking Stand version of this fender, please see here: https://www.thingiverse.com/thing:3230717
3D Solutech ABS Preferred (Shown), but PLA and PETG work
I print the Parking Fender, Standing UP, with a very high infill for strength. You can try lower infill, but it may not leave the parking feature strong enough to hold the weight of the wheel. You may be able to use more infill on the bottom and less as you move up.
We've found that if you print it laying down, the clips have more of a chance of breaking due to the layer direction.
I use Supports under the Parking feature, but they are Not needed under the upper clips like your slicer probably thinks.