Periodical treatment

I went out for flights early in the morning yesterday avoiding strong Sunlight in the daytime.
Careful checking on head bolts on OS 40LA motor found out some loosening leading to pressure leak, remembering the starting scenery, there was not a little difficulty to continue the initial rotation in cold starting. Again I felt the necessity of serious periodic inspection on even a model airplane. Thought I the lack of pressure must have carried out by some wear on the piston and the cylinder wall, so I had determined to replace motors into 46LA, but the boring cause was just loosening of cylinder head bolts.

Now, it's the hottest season with the annual festival in OSAKA today, Tenjin Matsuri, and the Boats parade, Funatogyo would be done around Tenjinbashi with 5,000 of fireworks, 1,300,000 people will come this evening to enjoy as usual.