How exciting this is for you! You are on the right track getting her mechanical parts to move so easily. With my old treadles I oil ever spot that looks like it goes to a moving part. Right sides up and then down and backwards from bottom to top. That should be about any direction. IMHO my priorities are to get the machine running first and then work on the beauty of the machine. If the original decals are in fair shape I don't touch them it adds to the historical value of the machine. If they are terrible then I would strip it down for a new paint job and new decals if they are available for this model and I am pretty sure they are if you need them. Just have fun with this new baby of yours. Thanks for sharing.