My hobby stops

I have determined to stop my hobby, Radio control model airplane that had been lasting for over half a century. It is natural that there exist not a few items piled since my childhood. As the way to dispose them, I'm making use of Yahoo Auction Japan though some 10 % of  the proceeds.
Over 60 packages have sent to the buyers by means of Kuroneko Yamato system, in case of smaller parts, "Compact"  with a specified box costing 65 yen is available, I knew it few days ago.

I have experienced a trouble in a dealing, I declared that an Italian motor Super Tigre S 60 motor had included the manual in spite of loosing it. As I know there is a famous Web site "Engine Review by Peter Chinn", I introduced it to him and I gave him two pieces of ST glow plugs for the sake of my fault. As we know, an ordinary included manual does not have any worthy information, I told the buyer important one about Compression Ratio.
Italian designed motor has often high compression because of Straight fuel uses, and it is very difficult to handle with hi-comp motor because of causing detonation phenomena.
Insertion of some comp adjusting sim is the way to solve it making use of thin aluminum gasket, the sim is easily obtained making use of a beer can with 0.10 mm thickness, cutting way is circular cutter, thin aluminum material makes it easy, not so difficult task.
Adequate compression ratio application changes the motor operation into very smooth and torqueful rotation with good combustion sound.
0.3 mm to 0.4 mm gaskets are the usual way if over 15 % Nitromethane fuel is invited. This kind of information is not obtained without some actual  researching and developing actions.
As a matter of my disappointment, I have never experienced an scenery that the Super Tigre motor was operated in good condition in our country. 
Mr. Peter Chinn had stated the differences between an ordinary motor and Super Tigre, showing compression ratio datum both full stroke and actual conditions. Most of the modeler should have known and understood the fact and the truth.