We all know they can be a pain. I got asked for a price to change the bottom element on a big economy 7 cylinder. My price was too high so I did not get the job......I did however get asked back to give my professional opinion on the handiwork of the cheapo polski who got the job......putting a huge lever on an immersion spanner is never a good idea - ask the people who live in the flat below! Still! It made me even more determined NOT to lower my prices.