Pressure loss compression etc at 0 Km

Hello dear car friends, I am talking about the following. the pressure loss test, a popular and good method aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa I have the engine so hung on the mounting block and out of curiosity installed the tester and read the values. I come to about 15% pressure loss. In itself not a worse value but the following: -Can it be that the loss will be much less when the rings and the mocking cut have fit in properly ? -Even though the engine was logically cold, If it is warm the values rise, correct ? Valves are 1000% dense, head is fresh gemac ht, sit milled, ground in, impeccable. I also hear that it passes by the piston or just the piston. If you would like to have comparative experiences like this with comparable stories where e.g. enter and temperature are the factor. Please look forward to lively exchange and to forming me a little further, greetings