RE: problems with picco 28 turbo
Are you saying it is super sensitive to tuning? I have found that my Picco28 can run pretty rich on 20% nitro and lose very little power. I can run at 210 degrees and get good power. I can dial it in just right and get 260 degrees and have it screaming.
I gave you a selection of plugs to compare to the OS, and there is a chance that the plug is giving you a narrow tuning range. It is hard to compare one companies plugs to the other. One companies 'medium' plug might be anothers 'cold' plug.
On a turbo engine, the plug issue might be emphasized. It is hard to tell, and might take a couple of 8 doller investments to find the right plug, because there is no master guide -- you can only take an educated guess when buying one.