Just did it to my V7C (107,000k) - I also had trouble, as well as fear & trepidation, but Luke at Motociclo had no problems. He'd done it before. Probably many times.
The cap at the bottom DOES come off. Luke gently levered it up with a screwdriver blade, the screwdriver was then more robustly employed, from both the inside & outside, against those 3 larger white (in my case) lugs, taking care not to completely ruin the thing. Once you have one free, the others follow pretty easily.
My ignition lost & gained its connection when the handlebars were moved. There was evidence of mild burning on one of the contacts, and the plastic holding one of the sprung plates was mildly heat distorted, enough to impede the smooth return of the spring.
I opted for a new ignition, but Luke seemed to think that the plastic blocks themselves were a standard trade piece & replaceable.
Good luck,
Mal