I'm the proud owner of a ZZR 400 N - (Madam) - Bought her two years ago and have enjoyed many a miles :D .
She is now however a tiny bit sick

I must have either bumped something or did something really bad because now she doesn't wanna start at all.
The mech says she has no compression at all - can all four go at once?
If so then I need another ZZR 400 N engine or the relevant parts to make her whole again - any idea where I can get these parts or the whole motor itself?