Hello again ...
Well I wasn't able to save my turbo head button it's damaged. I just wish I would of knew ahead of time that they weren't compatible (Rossi, Novarossi T-Plugs)...

Anyhow I decided to go back to standard plug. I didn't notice to much difference in performance switching from standard to turbo so no loss there the motor screams regardless...
I took a visit to SG Model Engines Sahak Ghoukasian house. He was a great guy had lots of information and very kind. I even told him I was on here asking questions and all is great I plan to do business with him more. I'm thinking of purchasing the AXE .25 engine for my GTP 2.
I think the changing of the connecting rod did the most improvement. The compression is still good ...
Do you have any information about the .25 AXE X1?