I took a Lucas C 40 dynamo there in 2007 - 8, that had worn bearings and I asked that it be overhauled. It was a spare unit that has sat in a box on a shelf, since the job was done. I wouldn’t say that the dynamo was very well presented, following it’s alleged overhaul and I planned to give a it a coat of fresh paint when it was needed. Recently the dynamo on my car failed (Supplied in 2004) and I fitted the reconditioned unit. It turned out that the reconditioned didn’t work ( It was giving no output ). It was then sent to Classic & Vintage dynamos (Along with the one off the car), who advised that the front bracket was cracked and that nothing appears to have been done to the internals, which were very dirty. I would add that prior to fitting the allegedly reconditioned unit, I enquired with Carl’s Starters & Alternators, as to the polarity of the unit. I left a few messages but received no reply (I was able to get around this matter). I seem to remember that the original transaction was a cash one and I will have to check whether I have a receipt for it. However, the guarantee will be expired by now anyway but that doesn’t alter the facts concerning the work carried out. Based on my experience, I would say poor workmanship and bad manners!