On Tue, 12 Mar 2019 19:21:44 +0000
ss wrote:

Any ideas on what I could use to increase the size of either, I do
have some epoxy stuff and also hot glue (gun), I reckon if I can add
1mm would it be enough to sort it.

Any suggestions.

https://imgur.com/qoN4ygX

If you can get to the cam all the way around (I can't tell from the
photo whether the top is clear of obstruction) then a bit of brass strip
wrapped around it, soldered into a continuous band and with a solder
blob where you need the extra throw (pressed on _after_ soldering :-).