Taking one unit, 158747, Left Bristol this morning 5:30, has been to Exmouth, then to Penzance, then a return to Plymouth and back to Exeter, covering a grand total of 596 miles according to RTT. Yes, I know there's stock shortages, however for a 30-year-old piece of kit that is insane. You could not expect your car to do that!
The Point is, you are going to get wear and tear, shortforms will happen, having something is better than nothing. The current situation is far from ideal, however GWR are doing their best and it is clear to see that with the resources they have got.
I am honestly happy with whatever turns up, as it really is miracle after doing that many miles every day that the units still manage to be out in service every day, the maintenance turnaround times at the minute must be insane, but you have got to give some slack to (and I know it differs every day) a 30-year-old train doing 600 miles every day.
I know they should have been replaced, or should be being replaced now, but I am more than happy with whatever comes around the corner, as long as me and my fellow passengers can get where we are going, regardless of it being a 158, 165, 166, 150 or Castle