That's a pretty good undertaking for an individual or a shop, pretty good amount of down time, tied up space just waiting, not counting removal, disassembly, reassembly and installing back in bike. Better to make it a winter project or a no rush anytime one.
Good to balance, but you could probably hold off for a while, although, it doesn't take long to do and should make for better throttle response and smoother idle.
Is that gear timed, counter weighted, did this vibration just start or has it been with you awhile? I would think the o-rings would be to control oil flow, either restricting or sealing.
I haven't seen the Rocket 3 dis-assembled but your picture makes me wonder why you couldn't hold cylinders in place with a couple bolts and washers and remove pistons and rods out the top. Unbolting rods thru openings after removing bottom pan cover. But again, I've never seen this engine up...
I've got a 05 Rocket III 2300, and I bought a ring compressor that's sized to correct bore and you simply push piston assembly in from top of bore. Simple and effective tool.
Agree, but you aren't threading a new hole just removing probably carbon deposit and possibly small flakes of aluminum. Heat and compression should take care of that. If not, you have an excuse to get an up close and personal look inside of the beast.
Take two of the right size nuts and screw on the stud, tighten one against the other, then tighten the top nut screwing the stud into the housing until tight, then with two wrenches loosen top nut and remove both nuts.
Remove all the plugs, this will allow to turn engine easier. If checking compression, remove only one plug per cylinder. Ground spark plug wire of plug that you removed from the cylinder.
I haven't figured out how to upload pictures but found an article in resources: Coil over plug mod ( cop ) for standard coil removal by JSHRAM- May 24, 2018. Several pages and pictures. Many people added to the article. Good article.