Upon arrival found a small drip underneath the burner and a small drip under the oil filter canister. Replaced the filter gaskets and filter and found that before the canister was fully full it was dripping from the bottom. Upon further inspection found there was some rust on the inside of the canister and it is possible there is a small pinhole leak forming. Replaced the filter canister and gaskets. Bled air from the filter canister and did not see any further leaks. Also found that the nozzle had started to go bad and was dripping inside of the blast tube. This would cause the oil to run back down the blast tube and drip from the bottom of the burner. Replaced the nozzle and started and tested the system. Unit is working properly