If you are not able to hold gas then you have a pretty major leak. System needs pumping full of dye gas to identify where the system is leaking from mate
Car needs scanning with SDD first off.
Problem could be electronic, issue with gearbox or likely torque converter. Sounds like an electronic issue somewhere to me, hence the SDD scan.
All the trim pops off. I have piano black and one piece was chipped by the previous owner.
The individual trim bits are widely available on the net. I bought a replacement part off ebay. I dunno £20 or so....and 1 min fitting it. Happy days
I did this to spray the plastic chrome bits on the top of the fake vents. Make sure you rub the 'chrome' down with very fine wet and dry paper, to give the paint something to adhere too. Also use a plastic primer on it before top coat of black. Happy days.