Strip to bare metal or not

[Accelo]

I have worked closely with my painters for years. They will not do a paint job, on a classic, that has had a repaint. It has to come off. If it flakes or peals or chips easy it's always the painters fault! The materials cost is so high it's just best practice to take it all off. The policy is partly to protect their reputation. Almost 90% of the time there is a bad repair under the paint that needs to be repaired correctly. When complaining to buddies the owner invariably forgets to mention the paint was over the top of old paint. The chances of it blowing up by reacting to the old paint is also gone if its on bare metal. If it blows up who pays the $2K in materials. I was at the shop today, and an gallon of hardener went up in price $100 from the last order. Just finding a painter that will do a complete is difficult and one that will go over old paint can't be found in my area.
The paint will look better and last much longer when applied to clean metal.
Cheers.