Compression Numbers, The Good Bad and Ugly (Ford Ranger)

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Yes, I know it's off topic, off forum, but I love you guys and you seem to really help. Please Please don't throw me off the forum for posting Non-Aveo.

I had an new manufacture engine put into my truck. I have a 96 Ranger Extended Cab 2WD with the 3.0 Liter Engine.

From the beginning, it has SUCKED. I have been going round and round with the mechanic who installed the engine. I am on my third oil change since the replacement. It's using about 3 quarts in between oil changes. Can anybody tell me if my numbers are good or not. I honestly don't have a feel for it. I used the procedure out the Haynes Manuel. I did each cylinder twice.

Cyln. | 1 | 2 Measurements
1 | 135 | 135 (all numbers are in PSI)
2 | 125 | 130
3 | 130 | 130
4* | 130 | 140
5 | 130 | 130
6 | 110 | 120

Picture of the testing tool

*Cylinder No. 4 has issues. When I pulled the plugs no 4 had oil stains around the threads.
Picture of 456


And 123


Any suggestions?