Me & Juki meet our match

Me & Juki conceded this contest today..... we could not sew this vinyl welt.
If it had just been vinyl that we made our own welting from, we could have done it.  But this is ready-made welt and instead of being sewn, it's held together with an adhesive.  It comes with those little clips already made.
I'm not sure but I think it's the adhesive that Juki can't handle.  The machine kept dragging and the fabric (Sunbrella) kept puckering and then when inside the head of the machine a thumping, straining noise started, we called a screeching halt to the project.
We're very disappointed, but these pillows will have to go to an upholsterer to be sewn.
I checked out Juki and gave her a good cleaning and a pep talk and she's sewing normal fabric just fine!  whew