I'll try to explain the methods I use for preserving, I start out by disassembling the entire bike. Literally every nut bolt and bearing is removed and put in their own little sandwich bag and marked. I use pliers to hold the small bolts and nuts and run them clean on the bench wire wheel (very gently) I also remove the fender braces and clean them and if necessary bath in wd40 rust remover as needed and clean them on the wire wheel. All of the parts that are greased or have grease on them are bathed in degreaser for a few days as is the chain Then all are washed with soap and water,dried,and immediately bathed in oil in tupperware containers until they are ready for re-install.
All painted parts are washed with soap and water with a small section of 3m white (least abrasive) pads. If this is done correctly you won't remove any paint or decals or pinstripes, just the dirt.
Then I use 3m fine rubbing compound and rub it in it gently and buff it all by hand when dry. Then I use a finer 3m compound rubbing gently and avoiding the pin striping. The paint is really clean and starting to pop now and alls that's left is one or two coats of turtle wax and buffing. now it's ready to put all back together. When I apply the rubbing compound I apply it with a small pneumatic orbital 3m hand buffer with the 3m finest velcro loop polishing pad. The second coat I apply with the next level aggressive polishing pad. Again You need to take great care in working around the pin striping, also use very little pressure and let the tool do the work as not to remove any paint. The weight of the polishing tool is about all you need as pressure on the painted parts.
I hope that makes sense. If you need further info let me know.