Pat,
Thanks for the info. The foot that's on my Dressmaster came from the goody box of my LSMG. No idea what is was supposed to fit. If I remember right I used it briefly on one of my other top clamp machines, don't remember which though. So it was an extra in my box that happened to fit, so I'm using it.
I have quite a few top clamp feet and attachments that have a bigger offset with thicker prongs that won't fit into grove of the presser bar and they won't line up with the needle hole side to side or front to back. They'll fit something and no doubt I'll end up with one someday.
I've got a Kenmore with a set of attachments, so I'll give them a try later today.
Joe