Hi ,Iam Putting My New 206 Consew Together.There A 2 Pins That Are Driving Me Nuts.Every Time I try To set The Machine In Its Case The Pins Fall Down.Can Someone Tell Me Their Purpose Is?Iam Making Progress This On This Consew..Once I start Sewing,Iam Confident That I Will Like It.Can I Use 138 On Top And 69 On The Bottom?I Sew Hunting Bags,Ball Bags,Bible Covers,Check Books,And Other Small Things.Mostly I use 5/6oz. Sometimes I use 8/9 oz. Veg Tan For The Ball Bags.I Just Put In My First Order To The Springfield Leather Co.And Iam Impressed So Far.Thanks,Navy