Thank you for your replies.
Martin. Yes I have seen those short films which have been helpful I will use the much of the technique described but I’m too afraid to try Ron’s method.
Neil. I’m not removing the corrector plate, just doing the outside and tilting the tube slightly.
Callum. I have heard the Baader cleaning fluid mentioned to me in the recent past. I may take a look at that.
Richard, thanks .Yes it’s de-ionised water I have and I will filter it and mix as a solution with isoropyl alcohol .
Re the washing up liquid this is usually quoted and advice is not to use the waxy ones. Would fairy liquid do?
I’ll use pure kleenex tissues and get the cotton wool from a pharmacist
Thanks to all for your comments.