Posting here and in legal. Thought some of you step parents might have first hand experience of residency/contact orders. 
Ex and I have a "by consent" shared residency order. There's a few fuzzy areas and it needs to be more specific and less ambiguous.
He's having a rare moment of being half reasonable about the kids (being an arse about our jointly owned property though).
Anyway. We've both agreed a number of amendments to be made. I want to use this opportunity as he's likely to be difficult about the kids/ gaps in clarity of the order again sometime soon as he has done so many times so it makes sense to get it tied down now whilst he's agreeable.
How do we amend an existing order if we both agree? I'm thinking surely I don't need to complete a C100, make the application, wait for a hearing and all attend Court just to make a few tweaks? Is there another way? Can we co sign a letter and make an application with the letter and current order and make an application for a it to be rewritten with amendments?
Any advice greatly received!