Hello,
I'm not a pro when it comes to air brushes, but I've got a little time as a novice with a 360. See my post about my 155 (same as 360) /forums/881031/ShowPost.aspx See what the pros say to do...
As far as the pressure issue, I purchased a regulator on ebay that is designed for precise control between 5 - 30 psi. I put it on my sears compressor and now its much easier to control the output. (I got two regulators for $9, so keep your eyes open.) Without that finer control of the new regulator, brushing was a pain. The normal stock compressor regulator will not hold a steady output at the lower psi's.
Again, please reference the NOVICE caveat at the beginning of my post.
I'm able to get ~1/8" lines with the stock 360 setup. When I purchased the 360 at the Badger Garage Sale, I was told by Badger that you can put the Cresendo 175 fine needle, tip regulator combo in the 360. That should knock the lines down a bit smaller.
Just my .02 cents...
Cheers
David