I got my Vintage Singer Zigzagger! Big Disappointment!

I got my Singer Zigzagger yesterday, I am very very disappointed about this attachment.  I tested on different fabrics, changed different tensions, played around with the setting.  But the results are the same, the stitches are way too inconstant.  Sometimes it looks perfect, then suddenly it looks very crappy. 

I should read more before I bought it.  After I won the auction, I read my vintage Singer Yahoo group, ppl complaining how crappy and useless of the Zigzagger.  :(   I may try to sell it at Ebay.

I won Vintage Singer Zigzagger 160985

I love my Singer 15-91, but I really need zigzag, coz I want to do FOE on my diapers and trainers, but I can't do it, because FOE requires zigzag.  So I have been looking for Singer Zigzagger on ebay and thrift stores.  I lost the bids on ebay every time, and I have no luck to find in thrift stores or flea markets.

And this afternoon, I finally won the ebay auction for the zigzagger.  YEAH!!!  I can't wait to get it and play with it.  It comes with 4 decorative stitches cams.  The best part is I only paid $3.75.  I hope the seller will ship it tomorrow, so I will get it by next Wednesday. 

I am so excited!!!  I can't wait to sew!!!!

Here is the zigzagger I won:
Singer Zigzagger 160985