If he's always done it that way and it's cracked , it's time to try something else. Doing something the same way and expecting a different result is crazy.
Teflon is very good for lubricating things to keep them moving but I find it's not so good for penetrating items that are already stuck. Although WD-40 is decried as not penetrating, I've freed off all sorts with it, blocks, rusty bolts and so on when plus gas is not available.
This is a question that's been asked many times on here and there's really no straight answer. Buying a boat (or anything really - car, house, hifi) is a matter of negotiation between buyer and seller. If you buy from a shop, the shopkeeper offers the goods at a fixed price and you either accept...
It is possible to get dried full cream milk off internet but never seen it in shops. Uht milk is much better than it used to be and quite acceptable on cereals as well as in tea but once open soon goes cheesy. Fridge is the only way really although I haven't tried craven dale.
When mine wore out after 15 years, I turned them over, they should be good for another 15. I'd use something like Formica if they needed changing again. I think the originals were Tufnall.
I think
They are supposed to in the first few years but not thereafter. It's been so long since I've had a new cylinder I can't remember what it said on the paperwork. I don't know anyone who's got a refund.
I sold two small size calor cylinders a couple of months ago - £10 each.
Don't worry about the lease/own argument technically calor retain ownership but who's gonna check.
I used original belts on mine for several years without problems. I did get a bit of black dust but assumed it was normal. I think you always get a bit of dust but, on a car , it just blows away .
"unless your an artist in previous life or have a very good eye it’s not easy , well I made right hash if it when I tried"
That's why I suggested getting a pro to do it.