So... I'm trying to wrap my head around this new machine I picked up two weeks ago. It's a Pfaff 335-H3 (I'm not sure what the "H3" designation represents). The Motor is a Efka Variostop. I'm not sure of the year on either, but it all looks to be original. So far with very little fuss I have it stitching nicely with a 22 Needle and 138 thread. My intent is to use it for wallets, totes, case, etc. So here are my questions... Efka Variospeed - Is this a positive or just a pain in the rear for