The chrome surrounds break if some ham fisted person removes the door card incorrectly..
Fix for the flickering light is to buy a Supercharger as that runs the alternator in reverse , cheaper fix might be to replace the belt tensioner.

Throttle cables go dry and get gritty to operate also correct routing makes a big difference.

Clutch is very heavy, best way to check for anything unusual would be to compare to another car.
I did 200 Miles around some of Snowdonias finest roads yesterday, clutch and left leg got quite a workout