I only have Re-Morse right now. After much cleaning and much tinkering, it was decided that the there was nothing more to be done for the Morse without taking apart the cam mechanism. Unfortunately, the pot metal used for this machine is so soft and cheap that it was impossible to take it apart without having pieces break off. I was very discouraged with the quality of this machine as compared to the Singers and Kenmores I have worked on.
I had been delighted with my find because of various blogs and reviews, but my advice to anyone about to pick one of these up is not to pay a penny until you know for sure that it will sew well in all the stitch functions. I assumed that with a little cleaning and oiling I could get it working, but alas, that was not the case. The machine was not designed and manufactured with the idea of durability in mind.
Even if you have to take oil, thread, and a needle with you, don't buy it until you know it works.