Tweaking and tuning for better Quality has been very worthwhile, it teaches you lots about Fused-filament limits and also about you'r specific system, you can't learn everything from a Wiki, Forum or Blogs, the best method is try it yourself.
For now I have settled on the following settings so I can start to print out some practical upgrade parts.
This is not the best quality, but I'm getting minimal warp and speed is not bad -
A print speed of 1000mm / min
0.4 layer height
0.5 Nozzle size (but I'm going to make and test a 0.7 shortly)
One outer shell (2 shells when printing gears)
1.5mm Infill pattern (45 and -45)
Outline at 90% speed.
Basic Pinch-wheel Extruder (That I'm very impressed with actually)
Still not using accelerations in my firmware, but as soon as I have a working Geared extruder, then I'm going to re-tune the whole system again and switch Accelerations back on to try getting the speed up.
Print 1 on the far left was the very first thing my machine printed.
Print 2 was 1.8mm infill and slow, ok quality, but not correct Extruder settings.
Print 3 was much too fast. Good extruder settings, but the motor was skipping steps (you can see loops of infill at the front).
Print 4 has just completed, 1000mm/min 1 outline and 1.5mm Infill, nice and smooth, and feels strong.
I printed a few other things, to test some of the earlier settings -
Whistle - (Version 2) - http://www.thingiverse.com/thing:1046
Probe Holder - (only 50% printed, I decided I didn't need one that badly) - http://www.thingiverse.com/thing:3525
It's printing the Geared Extruder Block and both the WADE gears Now, so I will hopefully be able to Blog them tomorrow.