Whoa whoa whoa! The method you have for the can is fine, if you understand why this is being done. The car I am currently racing is plumbed EXACTLY that way, although the type and size of can will make some difference. Make sure the vent line is plumbed into the bottom of the can and the line from the fill is to the side port of the can, this serves two purposes. 1)The vent will push oil into the bottom of the can under high rpm's, under lowere rpm's it will go back into the motor through the same line it came out of and the oil will not stay in the can robbing you of oil. 2)The oil fill port vented into the can will allow ALOT of heat from the motor to vent out of the can through the can breather. I plumbed ALOT of car back into the oil pan, I will not do this ANY more. The pan is full of oil. this port goes into the bottom of the side of the pan, oil cannot go back into the pans because the pan is full, and it can push some oil up that line. Now back to the problem, USLC HAD issues with the sleeves they were using and the result was loss of hp and blow by. Contact John Hagan At USLC and let him know your semi-fresh motor is down on power and pushing oil, they will work with you and get you back to what you paid for. They have changed to a different sleeve, the hp is better and problems like your are fewer.
Dennis Knox
Buckeye Legends
330-310-9212