You sound like the bloke i had on the phone tonight trying sell me a new inverter at an extortionate price for my solar panels because i haven`t got a 25 year warranty on it, i`m 71 years old who cares if it breaks i`ll buy a new one. But that is not as important as a rhocar cup i think you should have a meeting with your bank manager and consider investment into a replacement.
" ELBOW GREASE" the only cleaner you will ever need, £1.00 per spray bottle at Semi Chem and all good cheap jack shops.I bought a box off ebay we clean everything with it have not yet found anything it won`t shift