Hey donno3,
As a FNGirl to this world of leather work who is learning all she can by asking questions and advice along the way; I cannot offer adjustment info. on your machine, just a few more words of encouragement ........
I too started on a 29-4 that I thought was too cool. Quickly found out why it is a patch machine and struggled to sew straight lines after working hard on projects. Recently bought a new walking foot and could not be happier. So if you can manage the old 29-4, you can handle any new machine - without a doubt!
I can throw it out there to always try a sample of any new material to see how the machine will perform prior to putting your ready to sew project under the needle. Good luck!