Not an "expert" but I have owned a scrollsaw for over 60 years! Yes, I do have my first one, and it does still work! Now is used very very little, but, I will keep it .The original book on that old Craftsman 11" said to use candle wax (beeswax) on the blades and the tin table for a lubricant!
I have used the candle stubs on them ever since, white works best or the translucent ones. as that leaves a clear residue and does not stain the wood.
In fact; even did it again today. I just lay the candle sideways and rub it around, seems to work well.
A very fine sand paper 400+ and a random orbit sander can remove the scratches; if they bother you.