couple of Singer 99 questions...
Hi
I have an electric SInger 99 that seems to sew very well, but does not like to go through thick seams. Should I increase the pressure of the presser foot or is there something else going on? I have a Singer 237 Fashion Mate that is the same way, but it does not have a knob on top to adjust the pressure...any ideas there? The other problem I have w/my 99 is the bobbins. I realized yesterday that the plastic class 66 bobbins are too narrow and will not allow my winder to work. Are there different sizes of the class 66 bobbins? Are the metal ones better?
TIA,
Jp