SER was having shortage of EOG....many times EOG's of SRC-JP SPL, SRC-HAPA AC spl are also brought to src cdo and attached to various trains in rotation , so you will see in all SER LHB trains there is always a mismatch EOG in all trains of SER....because of repair and maintaince so rotation done very frequently almost weekly ...this EOG was repaired last to last week in SRC CDO....in one Gitanjali rake new ER EOGwas also given...1 no.ECR old EOG was also transfered to SER due to shortage, used in SRC-JP SPL......3 new EOG's r comming to SRC withing weeks.......