did a halfway leak down test

Ok i have been burning oil, alot actually so i did a compression check and here is what i got
1-180psi
2-210psi
3-210psi
4-210psi
so as ordered i did a leak down test, well kinda i have a vacume tester that i rigged up to send compressed air into the cylinder and i cant hear it leaking out of anywhere and they all seem to leak down about the same. Does anybody have any suggestions on what to do now with out tearing into the engine to find the exact problem?
1-180psi
2-210psi
3-210psi
4-210psi
so as ordered i did a leak down test, well kinda i have a vacume tester that i rigged up to send compressed air into the cylinder and i cant hear it leaking out of anywhere and they all seem to leak down about the same. Does anybody have any suggestions on what to do now with out tearing into the engine to find the exact problem?