machines...why do you hate this poor pony so!!!!

trying to finish up the last of my items that i was planning on delivering at AC

and of course...the pony curse strikes again

my nice shiny new singer sewing machine just started going haywire
is putting out too much thread on the underside so it's just a stream of floof, breaking needles, binding up, and generally not wanting to work even on just a single layer of cotton broadcloth

i've already done every maintenance action i can think of or find in the owners manual so....i dont know....
gah