Hi all, first time caller here.  I just bought a singer 133k.  The label says 133SV1 but after reading some posts here and finding a website to match the serial numbers I think it is a 133k built in 1940.  Anyhow,  I was wondering if anyone knows where to get a manual for this thing.  I bought it because I make knives and leather sheaths.  The guy said it was made to sew boot soles?  So I figured it would be powerful enough for what I want to do.  Any advice or help would be greatly appreciated.