Hi guys,I`ve now been without a boiler for over a week and finally got someone to come and give me a quote for a new boiler.The quote is on the high side but I need it doing.When he got back to me to confirm the date he could do it he also said he wanted me to buy the boiler and then pay him in cash or cash and a small cheque.I understand him not wanting to put it through his books but are there any warranty issues if I`ve purchased the boiler?