Hey zac
We had someone here from Stoke called Sean a while back but he has'nt posted in ages. I'm from near Nottingham.
I love shoegaze.. MBV, Slowdive, Ride, Chapterhouse back to Spacemen 3, Loop, the Telescopes..
To be honest dude i have two Jags and a Jazzy, one with a stock bridge and two with mustang bridges and i prefer the stock bridge.
Reasons being:
1/ the mustang bridge does not match the jag radius
2/ the saddles do not offer as much adjustment
3/ imo the mustang bridge rattles more
A little filing is normal with these guitars unfortunately. Its also usefull to apply grease/vaseline/lypsol to any moving parts of the bridge or parts that rattle against each other (between each saddle on a mustang bridge). It stops unwanted movement, friction and noise.
The tape on the bridge posts is a great idea if you do not use the tremelo. Because the trem is designed to 'rock' the bridge when used by pivoting on the bridge post screws.
If it cannot do this the strings will be sliding over the saddles increasing the chances of the guitar going out of tune and string breakage. However you may escape some of this using a mustang bridge.. but 'roller saddles' would be better.
If you have any problems be sure to ask here or check fenderjaguar.net.
😁