I just did this a few weeks ago. For SAS and GY tires, I am pretty sure it is set to 39. No idea about 30/35 psi warning & 39 setting though.
It is listed as Front Tire Placard and Rear Tire Placard under BdyCM.
Another thread about TPMS...
First, air up to > 35 psi and clear the warning, then air down as low as 30 psi (make sure it stays above 30 when cold). This is the way to clear warnings & a comfortable ride, unless you forscan the warning setting
I feel the 4wp is more plush than the yellow Bilstein. It will have more nose dives and body rolls than hoss 2.0., it is not as bad as Hoss 3.0 Fox though.
You can use Anderson hardtop installation manual as a reference since they are oem copy. In their first page (step 4b), they mentioned you may need to loose two bolts to align the front hole. You may need to do it on both sides.
Ask your dealer to refund the installation labor cost...
The default low pressure warning logic is not a one-threshold setting.
If warning is triggered, (any tire <30), you must air up to 35 to clear it. Due to rounding like Brian said, better to air up to 36.
Once it is cleared, you can lower it to 30 wo trigger any warning. Any cold pressure...
OK, that kind of makes sense.
I just did a quick estimation. Say the rear sags 1 inch, 4dr wheelbase is 116''. The caster angle could change by
arctan(1/116) ~~ 0.5 deg. It's not significant enough unless your alignment number is right on the boundary.
It is not that hard. Just pop one small plastic cover (the most challenging part ) & three bolts (10mm sockets) and you can take it off. But yeah, check the seat first.
I have no clue about the rattle. But I read through the Reddit thread. OP says it is the cable behind the handle assembly. Just want to know if you have tried it?
Update.
After one more week, I get more disappointed with the repair. After fixing the paint nibs, now it is a touchup repair on the rear fender, uneven paint inside the hood, broken clips on the weather stripping. With the holiday approaching, I don't want to leave it at the shop but...