G'Day again,
Thanks for the great advice.
Theres a couple of things that you mentioned that made me think, the leather was slightly damp , as I did wet the gusset part to get it into shape for sewing ,plus I was pretty eager to make my first bag , and the other thing was that I could try to adjust the pressure ,as I think it maybe too great , however I might try to adjust the pressure on both feet as the marks are from the bed , as I was sewing with the foot on the inside of the 'lip' or 'edge'
This has made me think again just while I'm here typing ,when I received the machine (in a wooden crate) there was a piece of sewn leather under the foot , it was 20mm thick , I suppose it was put there to demonstrate that it can sew the thickness as advertised as it is a 'saddle making machine', so no doubt the adjustments were for set for that thickness.So I'll go and try to adjust the feet.
As for the tensions, I seem to have that just right, ...after much practice.
I might try to find some demo dvds on sewing bags etc.
Once again thank heaps.