Got my updated PP205 last week and have been trying all the functions (stick/TIG/PAC). I have taken a few stick & TIG classes so I have a basic understanding of how each process works. PAC is new to me and it is a lot harder to free hand a straight line or make a clean cut than I thought. I have a few questions for the more experienced users.
When I press the trigger on the S45 there is a weak arc at first but then it energizes a second or 2 later when I move closer to the piece, is this normal?
Sometimes (5% of the time) the weak arc starts then goes out and there is a popping sound with the weak arc starting again and sometimes not. I release the trigger and the post flow starts, what is causing this to happen?
When I do get the arc cutting there is a lot of slag on the underside (3/8"), what can I do to fix this problem?
Are there general amp & psi settings to cutting different thicknesses?
Where is the best place to get more consumables for my S45 as I am just a noob?

Any advice would be appriciated.
Have a good day.